Disk Transfer Rate

Can someone point me in the right direction to download some freeware/shareware apps for OS X than can show me Disk Transfer rates (read/write) for various devices connected to my system?
I.e., an app that shows me the read/write speeds for an SSD connected via USB 2.0 would be great.
I.e., an app that show me the read/write speeds for a Network Attached Storage connected via Gigabit ethernet would be great.
Would be great if the app had the ability to toggle between MB/s, Mbps, Gbps, Kbps, etc...
Thanks!

Using Applications -> Utilities -> Terminal
iostat 10
Will tell you the I/O rates every 10 seconds
iostat 10
disk0 cpu load average
KB/t tps MB/s us sy id 1m 5m 15m
18.77 8 0.14 15 4 81 0.69 0.68 0.70
26.93 9 0.25 28 7 65 0.66 0.67 0.70
8.00 0 0.00 24 5 71 0.63 0.67 0.69
4.00 0 0.00 23 5 72 0.69 0.68 0.70
See "man iostat" for a list of iostat options.

Similar Messages

HDD data transfer rate is slow in my new i7

Hi
I had MacBook Pro 15" , 2.8 GHz , 500 GB HDD and because of some hardware problems Apple replace this laptop with new MacBook Pro 15" 2.66 i7 CPU, 500 GB HDD. I install same windows7 64bit in both via Boot camp. Disk transfer rate in old MacBook is 5.9 and in my new laptop is 5.6 ?!?!?!?
I installed Bootcamp drivers and also installed all updates of windows7.
Can you tell me reason of this difference and any solution to improve this rate?

Hi n, and welcome to Apple Discussions.
As you're still covered under warranty, call AppleCare or go to an Apple Store or AASP and explain the situation. A replacement computer is supposed to meet or exceed the machine it replaced, and if yours isn't performing to that level . . . .

How to find the max data transfer rate(disk speed) supported by mobo?

I plan on replacing my current HDD with a new and bigger HDD.
For this I need to know the max data transfer rate(disk speed) that my mobo will support. However, dmidecode is not telling me that. Am I missing something?
Here's dmidecode:
# dmidecode 2.11
SMBIOS 2.5 present.
80 structures occupying 2858 bytes.
Table at 0x000F0450.
Handle 0xDA00, DMI type 218, 101 bytes
OEM-specific Type
Header and Data:
DA 65 00 DA B2 00 17 4B 0E 38 00 00 80 00 80 01
00 02 80 02 80 01 00 00 A0 00 A0 01 00 58 00 58
00 01 00 59 00 59 00 01 00 75 01 75 01 01 00 76
01 76 01 01 00 05 80 05 80 01 00 D1 01 19 00 01
00 15 02 19 00 02 00 1B 00 19 00 03 00 19 00 19
00 00 00 4A 02 4A 02 01 00 0C 80 0C 80 01 00 FF
FF 00 00 00 00
Handle 0xDA01, DMI type 218, 35 bytes
OEM-specific Type
Header and Data:
DA 23 01 DA B2 00 17 4B 0E 38 00 10 F5 10 F5 00
00 11 F5 11 F5 00 00 12 F5 12 F5 00 00 FF FF 00
00 00 00
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Dell Inc.
Version: A17
Release Date: 04/06/2010
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 4096 kB
Characteristics:
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
EDD is supported
Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 17.0
Handle 0x0100, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: OptiPlex 755
Version: Not Specified
UUID: 44454C4C-5900-1050-8033-C4C04F434731
Wake-up Type: Power Switch
SKU Number: Not Specified
Family: Not Specified
Handle 0x0200, DMI type 2, 8 bytes
Base Board Information
Manufacturer: Dell Inc.
Product Name: 0PU052
Version:
Handle 0x0300, DMI type 3, 13 bytes
Chassis Information
Manufacturer: Dell Inc.
Type: Space-saving
Lock: Not Present
Version: Not Specified
Asset Tag:
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
Handle 0x0400, DMI type 4, 40 bytes
Processor Information
Socket Designation: CPU
Type: Central Processor
Family: Xeon
Manufacturer: Intel
ID: 76 06 01 00 FF FB EB BF
Signature: Type 0, Family 6, Model 23, Stepping 6
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Not Specified
Voltage: 0.0 V
External Clock: 1333 MHz
Max Speed: 5200 MHz
Current Speed: 2666 MHz
Status: Populated, Enabled
Upgrade: Socket LGA775
L1 Cache Handle: 0x0700
L2 Cache Handle: 0x0701
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Core Count: 2
Core Enabled: 2
Thread Count: 2
Characteristics:
64-bit capable
Handle 0x0700, DMI type 7, 19 bytes
Cache Information
Socket Designation: Not Specified
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Other
Installed SRAM Type: Other
Speed: Unknown
Error Correction Type: None
System Type: Data
Associativity: 8-way Set-associative
Handle 0x0701, DMI type 7, 19 bytes
Cache Information
Socket Designation: Not Specified
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Varies With Memory Address
Location: Internal
Installed Size: 6144 kB
Maximum Size: 6144 kB
Supported SRAM Types:
Other
Installed SRAM Type: Other
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: <OUT OF SPEC>
Handle 0x0800, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: PARALLEL
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-25 female
Port Type: Parallel Port PS/2
Handle 0x0801, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: SERIAL1
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x0802, DMI type 126, 9 bytes
Inactive
Handle 0x0803, DMI type 126, 9 bytes
Inactive
Handle 0x0804, DMI type 126, 9 bytes
Inactive
Handle 0x0805, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB1
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0806, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB2
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0807, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB3
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0808, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB4
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0809, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB5
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB6
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB7
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB8
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: ENET
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: RJ-45
Port Type: Network Port
Handle 0x080E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: MIC
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x080F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: LINE-OUT
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0810, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: LINE-IN
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0811, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: HP-OUT
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0812, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: MONITOR
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-15 female
Port Type: Video Port
Handle 0x090A, DMI type 9, 13 bytes
System Slot Information
Designation: SLOT1
Type: x1 Proprietary
Current Usage: In Use
Length: Long
Characteristics:
PME signal is supported
Handle 0x0901, DMI type 126, 13 bytes
Inactive
Handle 0x0902, DMI type 9, 13 bytes
System Slot Information
Designation: SLOT2
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 2
Characteristics:
5.0 V is provided
3.3 V is provided
PME signal is supported
Handle 0x0903, DMI type 126, 13 bytes
Inactive
Handle 0x0904, DMI type 126, 13 bytes
Inactive
Handle 0x0905, DMI type 126, 13 bytes
Inactive
Handle 0x0906, DMI type 126, 13 bytes
Inactive
Handle 0x0907, DMI type 126, 13 bytes
Inactive
Handle 0x0908, DMI type 126, 13 bytes
Inactive
Handle 0x0A00, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Disabled
Description: Intel Graphics Media Accelerator 950
Handle 0x0A02, DMI type 10, 6 bytes
On Board Device Information
Type: Ethernet
Status: Enabled
Description: Intel Gigabit Ethernet Controller
Handle 0x0A03, DMI type 10, 6 bytes
On Board Device Information
Type: Sound
Status: Enabled
Description: Intel(R) High Definition Audio Controller
Handle 0x0B00, DMI type 11, 5 bytes
OEM Strings
String 1: www.dell.com
Handle 0x0D00, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 1
en|US|iso8859-1
Currently Installed Language: en|US|iso8859-1
Handle 0x0F00, DMI type 15, 29 bytes
System Event Log
Area Length: 2049 bytes
Header Start Offset: 0x0000
Header Length: 16 bytes
Data Start Offset: 0x0010
Access Method: Memory-mapped physical 32-bit address
Access Address: 0xFFF01000
Status: Valid, Not Full
Change Token: 0x00000018
Header Format: Type 1
Supported Log Type Descriptors: 3
Descriptor 1: POST error
Data Format 1: POST results bitmap
Descriptor 2: System limit exceeded
Data Format 2: System management
Descriptor 3: Log area reset/cleared
Data Format 3: None
Handle 0x1000, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x1100, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_1
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: AD00000000000000
Handle 0x1101, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_3
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Handle 0x1102, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_2
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Handle 0x1103, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_4
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Handle 0x1300, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FDFFFFFF
Range Size: 4064 MB
Physical Array Handle: 0x1000
Partition Width: 1
Handle 0x1400, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x1100
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 1
Interleaved Data Depth: 1
Handle 0x1401, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x000FDFFFFFF
Range Size: 2016 MB
Physical Device Handle: 0x1101
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 1
Interleaved Data Depth: 1
Handle 0x1402, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x1102
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 2
Interleaved Data Depth: 1
Handle 0x1403, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x000FDFFFFFF
Range Size: 2016 MB
Physical Device Handle: 0x1103
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 2
Interleaved Data Depth: 1
Handle 0x1410, DMI type 126, 19 bytes
Inactive
Handle 0x1800, DMI type 24, 5 bytes
Hardware Security
Power-On Password Status: Enabled
Keyboard Password Status: Not Implemented
Administrator Password Status: Enabled
Front Panel Reset Status: Not Implemented
Handle 0x1900, DMI type 25, 9 bytes
System Power Controls
Next Scheduled Power-on: *-* 00:00:00
Handle 0x1B10, DMI type 27, 12 bytes
Cooling Device
Type: Fan
Status: OK
OEM-specific Information: 0x0000DD00
Handle 0x1B11, DMI type 27, 12 bytes
Cooling Device
Type: Fan
Status: OK
OEM-specific Information: 0x0000DD01
Handle 0x1B12, DMI type 126, 12 bytes
Inactive
Handle 0x1B13, DMI type 126, 12 bytes
Inactive
Handle 0x1B14, DMI type 126, 12 bytes
Inactive
Handle 0x2000, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x8100, DMI type 129, 8 bytes
OEM-specific Type
Header and Data:
81 08 00 81 01 01 02 01
Strings:
Intel_ASF
Intel_ASF_001
Handle 0x8200, DMI type 130, 20 bytes
OEM-specific Type
Header and Data:
82 14 00 82 24 41 4D 54 01 01 00 00 01 A5 0B 02
00 00 00 00
Handle 0x8300, DMI type 131, 64 bytes
OEM-specific Type
Header and Data:
83 40 00 83 14 00 00 00 00 00 C0 29 05 00 00 00
F8 00 4E 24 00 00 00 00 0D 00 00 00 02 00 03 00
19 04 14 00 01 00 01 02 C8 00 BD 10 00 00 00 00
00 00 00 00 FF 00 00 00 00 00 00 00 00 00 00 00
Handle 0x8800, DMI type 136, 6 bytes
OEM-specific Type
Header and Data:
88 06 00 88 5A 5A
Handle 0xD000, DMI type 208, 10 bytes
OEM-specific Type
Header and Data:
D0 0A 00 D0 01 03 FE 00 11 02
Handle 0xD100, DMI type 209, 12 bytes
OEM-specific Type
Header and Data:
D1 0C 00 D1 78 03 07 03 04 0F 80 05
Handle 0xD200, DMI type 210, 12 bytes
OEM-specific Type
Header and Data:
D2 0C 00 D2 F8 03 04 03 06 80 04 05
Handle 0xD201, DMI type 126, 12 bytes
Inactive
Handle 0xD400, DMI type 212, 242 bytes
OEM-specific Type
Header and Data:
D4 F2 00 D4 70 00 71 00 00 10 2D 2E 42 00 11 FE
01 43 00 11 FE 00 0F 00 25 FC 00 10 00 25 FC 01
11 00 25 FC 02 12 00 25 FC 03 00 00 25 F3 00 00
00 25 F3 04 00 00 25 F3 08 00 00 25 F3 0C 07 00
23 8F 00 08 00 23 F3 00 09 00 23 F3 04 0A 00 23
F3 08 0B 00 23 8F 10 0C 00 23 8F 20 0E 00 23 8F
30 0D 00 23 8C 40 A6 00 23 8C 41 A7 00 23 8C 42
05 01 22 FD 02 06 01 22 FD 00 8C 00 22 FE 00 8D
00 22 FE 01 9B 00 25 3F 40 9C 00 25 3F 00 09 01
25 3F 80 A1 00 26 F3 00 A2 00 26 F3 08 A3 00 26
F3 04 9F 00 26 FD 02 A0 00 26 FD 00 9D 00 11 FB
04 9E 00 11 FB 00 54 01 23 7F 00 55 01 23 7F 80
5C 00 78 BF 40 5D 00 78 BF 00 04 80 78 F5 0A 01
A0 78 F5 00 93 00 7B 7F 80 94 00 7B 7F 00 8A 00
37 DF 20 8B 00 37 DF 00 03 C0 67 00 05 FF FF 00
00 00
Handle 0xD401, DMI type 212, 172 bytes
OEM-specific Type
Header and Data:
D4 AC 01 D4 70 00 71 00 03 40 59 6D 2D 00 59 FC
02 2E 00 59 FC 00 6E 00 59 FC 01 E0 01 59 FC 03
28 00 59 3F 00 29 00 59 3F 40 2A 00 59 3F 80 2B
00 5A 00 00 2C 00 5B 00 00 55 00 59 F3 00 6D 00
59 F3 04 8E 00 59 F3 08 8F 00 59 F3 00 00 00 55
FB 04 00 00 55 FB 00 23 00 55 7F 00 22 00 55 7F
80 F5 00 58 BF 40 F6 00 58 BF 00 EB 00 55 FE 00
EA 00 55 FE 01 40 01 54 EF 00 41 01 54 EF 10 ED
00 54 F7 00 F0 00 54 F7 08 4A 01 53 DF 00 4B 01
53 DF 20 4C 01 53 7F 00 4D 01 53 7F 80 68 01 56
BF 00 69 01 56 BF 40 FF FF 00 00 00
Handle 0xD402, DMI type 212, 152 bytes
OEM-specific Type
Header and Data:
D4 98 02 D4 70 00 71 00 00 10 2D 2E 2D 01 21 FE
01 2E 01 21 FE 00 97 00 22 FB 00 98 00 22 FB 04
90 00 11 CF 00 91 00 11 CF 20 92 00 11 CF 10 E2
00 27 7F 00 E3 00 27 7F 80 E4 00 27 BF 00 E5 00
27 BF 40 D1 00 22 7F 80 D2 00 22 7F 00 45 01 22
BF 40 44 01 22 BF 00 36 01 21 F1 06 37 01 21 F1
02 38 01 21 F1 00 39 01 21 F1 04 2B 01 11 7F 80
2C 01 11 7F 00 4E 01 65 CF 00 4F 01 65 CF 10 D4
01 65 F3 00 D5 01 65 F3 04 D2 01 65 FC 00 D3 01
65 FC 01 FF FF 00 00 00
Handle 0xD403, DMI type 212, 157 bytes
OEM-specific Type
Header and Data:
D4 9D 03 D4 70 00 71 00 03 40 59 6D 17 01 52 FE
00 18 01 52 FE 01 19 01 52 FB 00 1A 01 52 FB 04
1B 01 52 FD 00 1C 01 52 FD 02 1D 01 52 F7 00 1E
01 52 F7 08 1F 01 52 EF 00 20 01 52 EF 10 21 01
52 BF 00 22 01 52 BF 40 87 00 59 DF 20 88 00 59
DF 00 E8 01 66 FD 00 E9 01 66 FD 02 02 02 53 BF
00 03 02 53 BF 40 04 02 53 EF 00 05 02 53 EF 10
06 02 66 DF 00 07 02 66 DF 20 08 02 66 EF 00 09
02 66 EF 10 17 02 66 F7 00 18 02 66 F7 08 44 02
52 BF 40 45 02 52 BF 00 FF FF 00 00 00
Handle 0xD800, DMI type 126, 9 bytes
Inactive
Handle 0xDD00, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 00 DD 00 01 00 00 00 10 F5 00 00 00 00 00
00 00 00
Handle 0xDD01, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 01 DD 00 01 00 00 00 11 F5 00 00 00 00 00
00 00 00
Handle 0xDD02, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 02 DD 00 01 00 00 00 12 F5 00 00 00 00 00
00 00 00
Handle 0xDE00, DMI type 222, 16 bytes
OEM-specific Type
Header and Data:
DE 10 00 DE C1 0B 00 00 10 05 19 21 01 00 00 01
Handle 0x7F00, DMI type 127, 4 bytes
End Of Table
Hdparm also does not tell me the max data transfer rate (disk speed) of my current drive although this link : www.wdc.com/en/library/sata/2879-001146.pdf says that it is 3.0Gb/s
and here's hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD800JD-75JNC0
Firmware Revision: 06.01C06
Standards:
Supported: 6 5 4
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
CHS current addressable sectors: 16514064
LBA user addressable sectors: 156250000
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 76293 MBytes
device size with M = 1000*1000: 80000 MBytes (80 GB)
cache/buffer size = 8192 KBytes
Capabilities:
LBA, IORDY(can be disabled)
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 8
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* DOWNLOAD_MICROCODE
SET_MAX security extension
Automatic Acoustic Management feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* SMART error logging
* SMART self-test
* Gen1 signaling speed (1.5Gb/s)
* Host-initiated interface power management
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
Checksum: correct
Last edited by Inxsible (2011-03-27 04:40:49)

I just checked my BIOS and my current setting is set at IDE although it also mentions that the default should be AHCI. Currently I have a dual boot of Windows 7 (need it for Tax software) and Arch
So I guess, when I get the new HDD, I will first set it to AHCI and then install the OSes on it. See if NCQ helps any, and if not I will turn it back and re-install (if I have to). I am planning to have Windows only in virtualbox in the new drive.
Anyhoo, while I was in the BIOS I found two things which I had questions about :
1) Under Onboard Devices --> Integrated NIC , my setting is currently set at "On w/PXE" and it says the default should be just "On". Would it be ok to change it back to On since its a single machine and its not booting an OS on any server. I just don't want to have to re-install anything now since I will be doing that in the new HDD.
2) How would I know whether my BIOS would support a 64 bit OS in Virtualbox? I checked some setting under Virtualization, but they weren't very clear.
I will edit this post and let you know exactly what settings were present under the Virtualization sub-section.

Disk data transfer rate - iMac 2013

Good morning Apple fellows
First of all, sorry for my troubled English speaking, I'll do my best to explain the issue I'm having in the best way possible.
Yesterday I finally received my new iMac (I'm a proud Apple user since 2006), the machine has these specifications: 16 GB Ram, i7 processor, nVidia GT 780M, and a SSD drive of 1TB of capacity.
Under Mavericks everything runs smooth and fine, no issues at all, just perfect, the fastest machine I've ever had. Unfortunately, I had to install Windows 7 via Bootcamp (I'm a mechanical engineer and I use Autodesk Inventor to do my stuff).
After completing the installation of the Microsoft OS, I instantly noticed some laggy performance while running Windows: I installed as asked all the Bootcamp drivers with the USB pendrive that I prepared, but both the startup of the system and the normal use were a bit slow, even slower than my old '09 iMac.
In order to understand what the problem was, I ran the system performance test included in Windows: all the ratings I have are maxed out at 7.9 (7.9 is the top I think), in exception of the "Disk Data Transfer Rate", that is 5.9. As far as I remember, this value is typical for a mechanical disk drive, not for an SSD drive supported with PCIe connections.
Does anybody here got a similar issue? Is there any driver package that I have to install in addition to the Bootcamp drivers?
Thanks in advance

That is because the WEI uses your boot disk as the default device to measure performance, and, for instance, a Velociraptor 10 K disk, does not score more than 5.9. The story changes when the test is run on other disks, like my array:
However, this measurement is totally worthless in real life. You should look at practical benchmarks like PPBM5 Benchmark

Bonnie++/zcav: I tracked transfer rates across my IDE disk

and it seems to good to be true. This graph is almost constant through all the zones on the disk. One would expect a steadily falling graph instead.
Do you have any recommendations on how to find the bottleneck?
bonnie++
Version: 1.03e
Last edited by goodboy (2012-08-13 21:53:53)

it's not always the mobo which is guilty in this situation. the USB2 peripheral also counts. i get totally different transfer rates with different peripherals using the same USB2 port. it looks like a compatibility issue to me. anyway, in case you don't want to waste your time doing it through USB2, just take the external HDD out of its enclosure and connect it to an IDE cable from your machine.

Slow transfer rate between external hard disk and TC

Hi all,
Yesterday I installed a new 1TB TC and attached to it an external LaCie 500 GB HD and a printer (HP 3325) via a USB hub to it. The thing is that although the transfer from the LaCie to my Mac is smooth via wifi, I can't say the same about the data transfer rate between my LaCie and the TC. Whilst they are connceted via USB, it seems that the speed is just half that from the LaCie to my Mac.
Any of you have faced the same problem or know why that is happening?
Thanks in advance,
Ramon M.

Ramon, Welcome to the discussion area!
You have to remember that the data is not simply going through the USB port from the hard drive to the Time Capsule.
The data is actually going from the hard drive to your Mac (through the Time Capsule) and then from your Mac to the Time Capsule. Therefore it is causing twice as much traffic as a simple transfer between your Mac and the Time Capsule.

What is max internal hard drive transfer rate compatible with a 2007 MacBook Pro?

In attempt to upgrade my mid-2007 MacBook Pro (Intel Core 2 Duo), I bought a Seagate 750GB listed as compatible with my computer on MacSales.com . . .
Seagate Momentus XT ST750LX003 750GB 7200 RPM 32MB Cache 2.5" SATA 6.0Gb/s Solid State Hybrid Drive -Bare Drive
Installation appeared to go well and I ran an extended hardware test with no issues found. However, the drive is listed at 5.46 TB (would be nice) and I get an input/output error when attempting to partition. I can initiate an erase, but after the time I would suspect it would take to erase the drive, I get an input/output error - it seems to appear after the first 750 GB of the '5.5 TB' was erased. At all times, the drive is not recognized when I attempt to install OS X from original discs.
I suspect the 6.0 GB/s transfer capacity of the hard drive is not compatible with the MacBook Pro. The drive came with 4 jumper pins but no jumper and no label diagram to set a slower transfer rate. I called Seagate, Newegg, OWC, and Apple, but no one has compatibility info for my MacBook Pro. To them, it appears I am running the first tests of this new technology with an 'older' MacBook Pro.
My MBP has had no issues - I'd like to keep her going with the optimum internal hard drive capacity, but don't necessarily want to set up a test bench in my house (though my kids would enjoy destroying it) and pay several shipping and restocking fees to test new hard drives.
The original drive had a 1.5 GB/s transfer rate. Does anyone know the maximum transfer rate compatible with a 2007 MacBook Pro? 3.0 GB/s? 1.5 GB/s? Thank you.

No spinning hard drive will transfer data faster then 60-80MB a second. The XT models have a flash storage area that is used when reading and writing data that can make it Appear faster in some situations. That flash memory if only 8 or 16GBs in side, I forget which one.
The drie is rated to work on 6GB SATA bus but it certainly can not transfer data that fast. It should be backword compatible to work on slower buses.
Your drive is 750GBs in size. Not wure where you are getting this 5.5TB (that is 5.5 Tera Bytes which is 5500 Giga Bytes. Your drive is under 1TB)
What are you using to partition the drive? Disk Utilities from the original install DVD?
You need to install on your old drive, Update it from the Apple Website then clone it to the new drive. The version of OSX you are using may not function correctly with that large of a drive. Or get yourself a copy of Snow Leopard, retail disk for $29 from Apple, and do all the partitioning and installing with that version od OSX.

Slow transfer rate to time capsule - 2nd generation - mb pro 5ghz

alright
have time capsule with dual networks, macbook pro with n enabled connected to 5ghz network with full bars, yet while copying files to the time capsule, it seems slow
500kbs per second
about 7 min to copy a 744mb file to time capsule (according to finder)
time capsule connected via ethernet to 2wire 2701hg modem + wireless router ( wireless turned off )
configure ipv4 using : dhcp
ethernet wan port: automatic
connection sharing : share a public ip adress
ipv6 : link local only
wireless options
country - mexico
multicast rate - high
transmit power - 100%
use wide channels
any ideas?
thanks in advance

Hi,
In the Manual Setup->Advanced->Logs and Statistics page of Airport Utility you'll find information on wireless signal quality for each client connected. Primarily, signal quality will determine the connection speed of your file transfers, the best you can do to improve things is to find a wireless channel with the least interference, Manual Setup->Wireless.
My Macbook Air connection is showing -66 Signal, -89 Noise, 122 Rate which gives me a wireless file transfer rate in bursts from 500kbps to 22Mbps. Time Capsule is not the fastest combo device, even file transfers over LAN Ethernet are around 50% slower than a regular Airport Extreme and I've found transfers to the disk from a GigE connected Mac Pro top out at around 60Mbps.
The Time Capsule is more useful as a convenience tool than speed I think so just be patient.

Extremely slow transfer rate from iOmega eGo to iMac

I am using a brand new 27" iMac and an iOmega eGo 2TB hard drive (http://www.pcmag.com/article2/0,2817,2374133,00.asp). The drive has it's own power source and is connected to my computer via USB.
I'm trying to transfer files from the hard drive to my new iMac and the transfer rate is painfully slow. They are files from my old MacBook which I sold last week.
When the disc is not mounted, it seems to function normally - it's blue indicator light is consistently on and it sounds right. However, when I mount the disc and begin using it - in this instance to transfer files, it goes extremely slow. The blue light will mostly remain off, then interminnently flash on and onscreen a small amount of data will move.
Through disk utility I was able to successfully verify and repair the disc, but it's still behaving this way. Can anyone help? SOS!

I am using a brand new 27" iMac and an iOmega eGo 2TB hard drive (http://www.pcmag.com/article2/0,2817,2374133,00.asp). The drive has it's own power source and is connected to my computer via USB.
I'm trying to transfer files from the hard drive to my new iMac and the transfer rate is painfully slow. They are files from my old MacBook which I sold last week.
When the disc is not mounted, it seems to function normally - it's blue indicator light is consistently on and it sounds right. However, when I mount the disc and begin using it - in this instance to transfer files, it goes extremely slow. The blue light will mostly remain off, then interminnently flash on and onscreen a small amount of data will move.
Through disk utility I was able to successfully verify and repair the disc, but it's still behaving this way. Can anyone help? SOS!

Is it possible to achieve 10 MHz output transfer rate on 6534 device?

I want to achieve 10 MHz output transfer rate on 6534 device. I need to contunuously generate non-repeating data. But when I execute the CVI sample program DOdoubleBufPatternGen653x, I cannot exceed the 1 MHz transfer rate (iPgTB = -3, iReqInt = 20), I get a -10843 error. Parameter oldDataStop is set to 1. Each halfbuffer contains 100000 points, buffer - 200000. My system is Pentium IV 2GHz, 512 MB RAM. What should I change to achieve 10 MHz transfer rate? Is it possible in this mode?

Greetings Alexey,
It should be possible, but it may take some extra thought and effort on your part due to the limitations and/or use case of your system. I would first recommend that you see the NI Tutorial "Maximizing the Performance of the NI 6534 Digital I/O Device" available online at . Based upon the error you are getting, it sound like you are not getting sufficient PCI bus bandwidth. Are you perhaps reading this data from disk (that would roughly double the PCI bus bandwidth required, or halve the transfer rate that you can expect to achieve) or using other PCI devices that are contending for bandwidth (potentially video cards, sound cards, network cards, dr
ive controllers...)? Some of these PCI devices need substantial bandwidth, others will grab the bus periodically for small transfers (sound cards, seemingly unused network cards forwarding broadcast packets...), and these could potentially interfere with your ability to stream data continuously at high rates. You might try disabling unused devices in your device manager. If you continue to have difficulties, please forward us more details about your system, what it is doing, and how your program works (are you streaming data from disk, network, or are you generating it on the fly).
Sincerely,
Jeremiah Cox
Platform Software Product Support Engineer
National Instruments
>

How to get better than 5.2MB/s transfer rate from USB 2.0 on Mac Mini

G'day,
I've got a circa 2007 Mac Mini with 1GB of RAM, running Snow Leopard. Connected to this is a USB 2.0 500GB Seagate Freeagent drive from circa 2008. As far as I know, the USB disk is free of errors.
I am trying to use dd with a block size of 1MB to transfer a 250GB file from an Ethernet mounted Time Capsule drive to the USB disk on /dev/disk1.
A dd from the Time Capsule to the /dev/null gives me a transfer rate of ~35-40MB/s. However, when the target is /dev/disk1, the transfer rate is only around 5MB/s. I checked the system profiler and disk1 is connected to the USB High Speed Bus.
Any clues on how to improve USB 2.0 transfer performance?

Fragmentation is unlikely to be an issue since I was trying to write to the raw block device with dd which is as close to a pure sequential write scenario as one is likely to encounter (e.g. no small block, random access involved)
From a Linux host, I was able to dd to a file on the disk's file system at 20MB/s.
I'll run some other tests with another disk to see whether the issue is peculiar to the disk or to the Mac's USB subsystem.

Change data transfer rate ?

Hi there,
I have installed a new WD 1tb internal hard drive in my late 2006 iMac . I've managed to get over a problem I posted about earlier namely getting the Snow Leopard disc out and using my original Tiger 10.4 discs. Trouble now is despite following the instructions for formatting my new hard drive I keep getting input\output error coming up . I've googled a lot and I believe it may be because my intel Mac supports 1.5gbs a second transfer rate whilst the hard drive is 6gbs . I have a caviar blue advanced drive that has no jumpers to change , but I'm led to believe that would be the answer . I'm relatively new to all this but are there jumpers in the mac itself ? Or is there a way to change the rate so my Mac accepts and formats the drive ? On various sites it says the drive is compatible but not how to do this. Hope it makes sense lads I'm sooo stressed .
Cheers

Transfer rate won't cause this problem. Your Mac will only transfer data as fast/slow as it can, 1.5gbs. The HD transfer rate will automatically slow to 1.5gbs.
What did you use to format the HD and what format did you use? It should be formatted to 'Mac OS Extended (Journaled)'. This can be easily done using the Disk Utility app that comes with OSX.
Usually the jumpers are for making the HD a master or slave drive. You shouldn't have to mess with the new HD settings to make it work.

Disk Transfer (reads and writes) Latency is Too High

i keep getting this error:
the Logical Disk\Avg. Disk sec/Transfer performance counter has been exceeded.
i got these errors on the following servers:
active directory
SQL01 (i have 2 sql clustered)
CAS03 (4 cas server loadbalanced)
HUB01
MBX02(Clustered)
a little info on our environment:
*Using SAN storage.
*Disks are new ,and working fine
*the server has GOOD hardware components(16-32 Gb RAM;Xeon or quadcore........)
i keep having these notifications everyday; i searched on the internet and i found the cause to be 1 of the 2:
1) disk hardware issue( non common=rarely )
2) the queue time on the hard-disk( time to write on the Hard-disk)
if anyone can assist me with the following:
1) is this a serious issue that will affect our enviroment?
2) is it good to edit the time of monitoring to be 10minute(instead of the default 5min)
3) is there any solution for this?(to prevent these annoying -useless??--- notifications)
4)what is the cause of this queue delay;;and FYI sometime this happens when nothing and noone is using the server (i.e the server is almost Idle)
Regards

The problem is.... exactly what the knowledge of the alert says is wrong. It is very simple. Your disk latency is too high at times.
This is likely due to overloading the capabilities of the disk, and during peak times, the disk is underperforming. Or - it could be that occasionally, due to the design of your disks - you get a very large spike in disk latency... and this trips the
"average" counter. You could change this monitor to be a consecutive sample threshold monitor, and that would likely quiet it down.... but only doing an analysis of a perfmon of several disks over 24 hours would you be able to determine specifically
whats going on.
SCOM did exactly what it is supposed to do.... it alerted your, proactively, to the possible existence of an issue. Now you, using the knowledge already in the alert, use that information to further investigate, and determine what is the corrective
action to take.
Summary
The Avg. Disk sec/Transfer (LogicalDisk\Avg. Disk sec/Transfer) for the logical disk has exceeded the threshold. The logical disk and possibly even overall system performance may significantly diminish which will result in poor operating system and application
performance.
The Avg. Disk sec/ Transfer counter measures the average rate of disk Transfer requests (I/O request packets (IRPs)) that are executed per second on a specific logical disk. This is one measure of storage subsystem throughput.
Causes
A high Avg. Disk sec/Transfer performance counter value may occur due to a burst of disk transfer requests by either an operating system or application.
Resolutions
To increase the available storage subsystem throughput for this logical disk, do one or more of the following:
â€¢
Upgrade the controllers or disk drives.
â€¢
Switch from RAID-5 to RAID-0+1.
â€¢
Increase the number of actual spindles.
Be sure to set this threshold value appropriately for your specific storage hardware. The threshold value will vary according to the diskâ€™s underlying storage subsystem. For example, the â€œdiskâ€ might be
a single spindle or a large disk array. You can use MOM overrides to define exception thresholds, which can be applied to specific computers or entire computer groups.
Additional Information
The Avg. Disk sec/Transfer counter is useful in gathering throughput data. If the average time is long enough, you can analyze a histogram of the arrayâ€™s response to specific loads (queues, request sizes, and so on). If possible, you should
observe workloads separately.
You can use throughput metrics to determine:
â€¢
The behavior of a workload running on a given host system. You can track the workload requirements for disk transfer requests over time. Characterization of workloads is an important part of performance analysis and capacity planning.
â€¢
The peak and sustainable levels of performance that are provided by a given storage subsystem. A workload can either be used to artificially or naturally push a storage subsystem (in this case, a given logical disk) to its limits. Determining these
limits provides useful configuration information for system designers and administrators.
However, without thorough knowledge of the underlying storage subsystem of the logical disk (for example, knowing whether it is a single spindle or a massive disk array), it can be difficult to provide an optimized one size fits all threshold value.
You must also consider the Avg. Disk sec/Transfer counter in conjunction with other transfer request characteristics (for example, request size and randomness/sequentially) and the equivalent counters for write disk requests.
If the Avg. Disk sec/Transfers counter is tracked over time and if it increases with the intensity of the workloads that are driving the transfer requests, it is reasonable to suspect that the logical disk is saturated if throughput does not increase and
the user experiences degraded system throughput.
For more information about storage architecture and driver support, see the Storage - Architecture and Driver Support Web site at
http://go.microsoft.com/fwlink/?LinkId=26156.

Installed SSD but data transfer rates at 8mb/s and unresponsive

Sigh, just installed the Crucial m500 480gb SSD in my macbook pro 17" early 2011. Everything seemed well on bootup and the SSD is detected and formatted successfully. But when I run CCC, it took 2hrs to transfer 2gb.
After stopping the cloning, the SSD became unresponsive. Even disk utility crashed and cldn't start up. I had to reboot.
Then I tried manually coping a 10gb file from my existing HDD to the SSD, it started at rates of 8mb/s then dropped. It wld stop for awhile (20-30s) and continue. All the while, transfer rates keep dropping till 2-3mb/s. I stopped the transfer halfway as it was taking so long. Then the SSD became unresponsive again.
Is it safe to say that there is a problem with the SSD??
Argggg. Tks.

You might want to contact Crucial support - make sure you have the latest firmware for it too (although no available updates are listed on the Crucial site).

Hanging iMac, slow transfer rates

Hello,
I'm experiencing two problems with my iMac which I think are probably linked as they began around the same time. I've scoured these forums and several other websites for answers but I haven't found many people whose problems sound exactly like mine.
My iMac was running Tiger up until around a year and a half ago. I then upgraded to Leopard without any issues, and everything ran smoothly. About a year ago I began to experience some strange behaviour - Flash would repeatedly crash, my mouse seemed unresponsive, and the system began to hang as though it was having trouble processing things. I reinstalled Leopard and things seemed ok, though the hanging remained (at this stage it was just the umbrella spinning and things taking longer to load). I upgraded to Snow Leopard hoping this would fix the issue when it came out and things got incredibly bad. Starting up and loading to the desktop took upwards of twenty minutes!! Doing ANYTHING seemed to be a massive strain on the system. I'd literally have to spend an hour or so monitoring it just to check my email and shut down in the correct way. Additionally the USB transfer speed, and download speed, had dropped to the point where a 20mb file had an estimated time of 2 hours to or transfer from my external hard drive. Internet downloads were similar.
After as many tests as I could manage I thought it might be RAM related, and upgraded to 3gig. It had no noticeable effect. Recently, whilst trying to solve the problem, I gritted my teeth and backed everything up. I wiped the system entirely, and tried a clean install of Leopard (the last functioning OS I had). It worked, in so far as the catastrophically slow behaviour stopped, but I'm STILL left with the slow transfer speeds, and the hanging. I've since re-upgraded to Snow Leopard, and this time it functions in the exact same way as Leopard.
To describe the problem in detail: Every few seconds - the time between varies from 2s - a minute - the system stops responding for a seemingly arbitrary amount of time. Often the umbrella appears. However, when it appears frozen the dock usually responds without any issues (though is entirely impotent as I can't open anything, including Finder) and if I'm typing then when it returns to my control anything I typed will usually appear. My USB transfer rates remain, even when there's no issue, extremely low. Same with downloads. The most bizarre thing for me is that during the times the system is responding (during which is can often manage multiple tasks without any complaint) it moves and respons in an incredibly speedy, efficient way - as though the RAM upgrade has really helped.
I've tried repairing disk permissions, checking activity monitor to see what may be a strain on the system (everything looks entirely normal), I've run several diagnostics (including tests on the new RAM and the old RAM and on the external hard drives), defragged, turned out absolutely EVERYTHING unnecessary... Nothing I do seems to have any effect on this behaviour! Does anyone have ANY ideas? It's going to be a real pain to get it to an Apple store.
Edit: The reinstallation of an OS, or wiping of the hard drive took between 18 and 24 hours a time, despite it usually showing a countdown from 30 minutes the whole time.
Message was edited by: Lavantios

Hello and Welcome to Apple Discussions...
Have you tried booting from the Snow Leopard disk, running Disk Utility and checking the startup disk for errors? If not...
Insert your install disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu and launch Disk Utility.
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
*(Check S.M.A.R.T Status of HDD at the bottom of right panel. It should say: Verified)*
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
When you are finished with DU, from the Menu Bar, select Utilities/Startup Manager.
Select your start up disk and click Restart
While you have the Disk Utility window open, look at the bottom of the window. Where you see Capacity and Available. Make sure there is always 10% to 15% free disk space
If the startup disk appears to be ok and there's enough free disk space, try running the Apple Hardware Test
If the AHT doesn't report any problems...
experience some strange behaviour - Flash would repeatedly crash
Try uninstalling the reinstalling a new copy of flash then repair disk permissions.
Uninstall Flash
Install Flash
Carolyn

Disk Transfer Rate

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