What's normal transfer speed?

Trying to transfer from iTunes to new 30G via recently installed USB 2.0 card (device mgr says USB is working). So far have transferred 117 songs in about 3 hours. Tried moving to old USB 1.1 and even slower. What's average real world transfer time for 117 songs (550MB)?

It takes 20 minutes to transfer seven entire movies onto mine, each about 500 MB.
I can see 2000 songs taking maybe an hour, but three hours for 117?
They might be encoded with the Apple Lossless codec, which then would make a 4-minute song about 100-200 MB...

Similar Messages

HT204350 What is the transfer speed?

What is the transfer speed using Thunderbolt port between two Macbooks with OS X Maverics platfrom?

Thunderbolt gives you two channels on the same connector with 10Gb/s of throughput in both directions. Ultrafast, ultraflexible
Thunderbolt 2 pushes that to 20Gb/s.
http://www.apple.com/thunderbolt/
http://news.cnet.com/8301-17938_105-20088164-1/thunderbolt-vs-usb-3.0-why-its-a- lose-lose/
http://reviews.cnet.com/8301-13727_7-57614844-263/how-to-transfer-large-amounts- of-data-between-macs-quickly/
http://arstechnica.com/apple/2013/10/os-x-10-9-brings-fast-but-choppy-thunderbol t-networking/
http://support.apple.com/kb/HT5872?viewlocale=en_US&locale=en_US

What is normal fan speed & temperature? (2009 iMac)

I recently bought a 27" iMac used, and I noticed today that the fans seem to run fast even when just looking at articles without video, which I found odd.
Are the below stats normal? I've noticed the Optical Drive fan at around 3300rpm at times.

If these temps are in Celsius, they seem somewhat high to me.
The GPU and GPU diode seem unusually hot to me.
I have the same model IMac as you and purchased used in 2011, my initial temps weren't as high as yours, but I was still uncomfortable with how hot it was running.
I suspect a lot of dust dirt and lint may have built up inside of your iMac.
SInce you cannot break into the iMac to clean out the dust and dirt, I recommend the use of a vacuum cleaner with a hose and crevice tool attachment to suck, instead of blowing, the dirt out of your Mac.
DO NOT USE CANS OF COMPRESSED AIR!!!!!
You will only be pushing the dust, dirt and lint further into the iMac
Power down your iMac, disconnect the power and all your connected peripheral devices, lay your iMac screen down on a soft cloth of heavy toweling and using the vacuum's crevice tool(avoid using the vacuum's brush attachments as this may cause an electrical static discharge issue) and lightly (to avoid scratching your iMac's finish) vacuum out the vents underneath the display. Also, unscrew the RAM compartment cover and vacuum the dust out of the RAM area. Vacuum the long upper vent the is across the back of your iMac. Vacuum out the CD/DVD slot and SD slot. Vacuum out all of the various connection ports on the of your Mac including the vent hole and grille that is visible through the iMac's support stand. Once done, re-setup and reconnect everything and power up your iMac and see if the temps go down.
If no joy in getting the temps down, call an Apple Store or Apple Authorised seller/repair/service center and ask about if they do interior cleaning of IMacs and its cost and schedule an appointment to get your Mac clean and free of interior lint and dust.
If, after a good clean out, you are still uncomfortable with the normal operating temps, as I am, you can do one and/or two things.
The easiest and quickest solution is to run a small desktop fan from behind the iMac and let the fan blow air on the backside aluminum panel to cool down your iMac.
The next thing you can try and use (and you'll get a lot of subjective criticism from others here on what I am about to advise) is to download a software fan controller app, like SMC Fan Control, and manually set all of your iMac's fans RPMs to a speed which gets the temps to a more comfortable level without revving the fans too high, which can act as an internal vacuum, sucking in quicker, more dust, lint and dirt inside your newly cleaned out iMac.
I use a fan control app and do not set the RPMs for any of the fans any higher than 1500-1600 RPMs (the 2009 IMac fans usually default at 1100-1200 RPMs, so I only bring them up enough to keep the highest component temps below 60-65 degrees C.
Good Luck to you!

Time Machine backup to Drobo seems slow. What is normal write speed?

I just got a Drobo with Firewire 800. I'm using it exclusively for Time Machine backups. The write speed to the Drobo appears to be about 3 to 4 mb/s. Is that normal? Anyone getting the same or similar speed? I used to backup to a LaCie drive (which, of course, died) and it was way faster.
Message was edited by: Hey Cricket
Message was edited by: Hey Cricket

Chr!x wrote:
* iMac hard drive size occuped : 160 Go (658.000 files)
* Backup made with CCC in 4 hours.
* First Time Machine backup still in progress (actually, 90 Go in 9hours...)
That's much too slow. Try the things in #D2 of the Time Machine - Troubleshooting *User Tip,* also at the top of this forum.
I don't understand with CCC is so fast comparing Time Machine initial backup. I hope incremental TM backup faster...
Some of the difference is that CCC is most likely doing a "block copy;" whatever's in each block on the internal is copied to the external; no checking, no indexing, etc. It assumes everything is in order.
Time Machine is making all the directory entries, hard links, etc., file by file, and indexing each file. Overall, it shouldn't take much longer than CCC (I use both), so one or more of the things in #D2 should greatly reduce the TM backup time.

What are Normal Disk Speeds

I think that my hard drive is very slow. That's how it seems. This is what hdparm shows:
[kirk@localhost ~]$ sudo hdparm -Tt /dev/sdb3
/dev/sdb3:
Timing cached reads: 1660 MB in 2.00 seconds = 829.94 MB/sec
Timing buffered disk reads: 236 MB in 3.03 seconds = 77.94 MB/sec
[kirk@localhost ~]$ sudo hdparm -Tt /dev/sdb3
/dev/sdb3:
Timing cached reads: 1662 MB in 2.00 seconds = 831.09 MB/sec
Timing buffered disk reads: 226 MB in 3.02 seconds = 74.80 MB/sec
[kirk@localhost ~]$ sudo hdparm -Tt /dev/sdb3
/dev/sdb3:
Timing cached reads: 1718 MB in 2.00 seconds = 858.59 MB/sec
Timing buffered disk reads: 234 MB in 3.00 seconds = 77.90 MB/sec
[kirk@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb3 23G 9.3G 13G 43% /
none 1013M 196K 1013M 1% /dev
none 1013M 0 1013M 0% /dev/shm
/dev/sdb1 183M 12M 162M 7% /boot
/dev/sdb5 92G 23G 65G 26% /srv
/dev/sdb6 175G 93G 74G 56% /home
/dev/sdg1 1.9G 213M 1.7G 12% /media/disk
[kirk@localhost ~]$ sudo hdparm -Tt /dev/sdb6
/dev/sdb6:
Timing cached reads: 1614 MB in 2.00 seconds = 806.60 MB/sec
Timing buffered disk reads: 218 MB in 3.02 seconds = 72.22 MB/sec
[kirk@localhost ~]$ sudo hdparm -Tt /dev/sdb5
/dev/sdb5:
Timing cached reads: 1544 MB in 2.00 seconds = 772.22 MB/sec
Timing buffered disk reads: 236 MB in 3.02 seconds = 78.20 MB/sec
Are these times slow?

Wait, there's more
But nothing LOOKS funny to me either here. But I tell you, opening a file in OpenOffice or sometimes just typing a URL into Firefox takes 10 times what I think it should. It was faster before, too. Not sure what/when it changed.
Dec 9 16:45:25 localhost kernel: usb 1-3.1: USB disconnect, address 19
Dec 9 16:45:26 localhost kernel: usb 1-3: new high speed USB device using ehci_hcd and address 20
Dec 9 16:45:26 localhost kernel: usb 1-3: configuration #1 chosen from 1 choice
Dec 9 16:45:26 localhost kernel: hub 1-3:1.0: USB hub found
Dec 9 16:45:26 localhost kernel: hub 1-3:1.0: 4 ports detected
Dec 9 16:45:26 localhost kernel: usb 1-3.1: new high speed USB device using ehci_hcd and address 21
Dec 9 16:45:26 localhost kernel: usb 1-3.1: configuration #1 chosen from 1 choice
Dec 9 16:45:26 localhost kernel: scsi14 : SCSI emulation for USB Mass Storage devices
Dec 9 16:45:26 localhost kernel: usb-storage: device found at 21
Dec 9 16:45:26 localhost kernel: usb-storage: waiting for device to settle before scanning
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: Cannot enable port 1. Maybe the USB cable is bad?
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot disable port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: Cannot enable port 1. Maybe the USB cable is bad?
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot disable port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: Cannot enable port 1. Maybe the USB cable is bad?
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot disable port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot reset port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: Cannot enable port 1. Maybe the USB cable is bad?
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot disable port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: cannot disable port 1 (err = -71)
Dec 9 16:45:31 localhost kernel: usb-storage: device scan complete
Dec 9 16:45:31 localhost kernel: hub 1-3:1.0: hub_port_status failed (err = -71)
Dec 9 16:48:24 localhost kernel: usb 4-1: new full speed USB device using uhci_hcd and address 2
Dec 9 16:48:24 localhost kernel: usb 4-1: configuration #1 chosen from 1 choice
Dec 9 16:49:34 localhost kernel: usb 1-3.1: USB disconnect, address 21
Dec 9 16:49:34 localhost kernel: usb 1-3: reset high speed USB device using ehci_hcd and address 20
Dec 9 16:49:35 localhost kernel: usb 1-3.1: new high speed USB device using ehci_hcd and address 23
Dec 9 16:49:35 localhost kernel: usb 1-3.1: configuration #1 chosen from 1 choice
Dec 9 16:49:35 localhost kernel: scsi15 : SCSI emulation for USB Mass Storage devices
Dec 9 16:49:35 localhost kernel: usb-storage: device found at 23
Dec 9 16:49:35 localhost kernel: usb-storage: waiting for device to settle before scanning
Dec 9 16:49:40 localhost kernel: scsi 15:0:0:0: Direct-Access Generic USB SD Reader 1.00 PQ: 0 ANSI: 0
Dec 9 16:49:40 localhost kernel: sd 15:0:0:0: Attached scsi generic sg2 type 0
Dec 9 16:49:40 localhost kernel: scsi 15:0:0:1: Direct-Access Generic USB CF Reader 1.01 PQ: 0 ANSI: 0
Dec 9 16:49:40 localhost kernel: sd 15:0:0:1: Attached scsi generic sg3 type 0
Dec 9 16:49:40 localhost kernel: sd 15:0:0:0: [sdc] Attached SCSI removable disk
Dec 9 16:49:40 localhost kernel: scsi 15:0:0:2: Direct-Access Generic USB SM Reader 1.02 PQ: 0 ANSI: 0
Dec 9 16:49:40 localhost kernel: sd 15:0:0:2: Attached scsi generic sg4 type 0
Dec 9 16:49:40 localhost kernel: scsi 15:0:0:3: Direct-Access Generic USB MS Reader 1.03 PQ: 0 ANSI: 0
Dec 9 16:49:40 localhost kernel: sd 15:0:0:3: Attached scsi generic sg5 type 0
Dec 9 16:49:40 localhost kernel: usb-storage: device scan complete
Dec 9 16:49:40 localhost kernel: sd 15:0:0:1: [sdd] Attached SCSI removable disk
Dec 9 16:49:40 localhost kernel: sd 15:0:0:3: [sdf] Attached SCSI removable disk
Dec 9 16:49:40 localhost kernel: sd 15:0:0:2: [sde] Attached SCSI removable disk
Dec 9 17:01:01 localhost dhcpcd: received SIGALRM, rebinding lease
Dec 9 17:01:01 localhost dhcpcd: eth0: reading lease `/var/lib/dhcpcd/dhcpcd-eth0.lease'
Dec 9 17:01:01 localhost dhcpcd: eth0: rebinding lease of 10.0.0.1
Dec 9 17:01:01 localhost dhcpcd: sending signal 14 to pid 1131
Dec 9 17:01:01 localhost dhcpcd: eth0: sending DHCP_REQUEST (xid 0x7b6fcecc), next in 3.53 seconds
Dec 9 17:01:01 localhost dhcpcd: eth0: acknowledged 10.0.0.1 from 10.0.0.138
Dec 9 17:01:01 localhost dhcpcd: eth0: leased 10.0.0.1 for 86400 seconds
Dec 9 17:01:01 localhost dhcpcd: eth0: adding IP address 10.0.0.1/24
Dec 9 17:01:01 localhost dhcpcd: eth0: writing lease `/var/lib/dhcpcd/dhcpcd-eth0.lease'
Dec 9 17:01:01 localhost dhcpcd: eth0: executing `/usr/lib/dhcpcd/dhcpcd-run-hooks', reason REBIND

Internal Disk to Disk Data Transfer Speed Very Slow

I have a G5 Xserve running Tiger with all updates applied that has recently started experiencing very slow Drive to Drive Data transfer speeds.
When transferring data from one drive to another ( Internal to Internal, Internal to USB, Internal, Internal to FW, USB to USB or any other combination of the three ) we only are getting about 2GB / hr transfer speeds.
I initially thought the internal drive was going bad. I tested the drive and found some minor header issues etc... that were able to be repaired so I replace the internal boot drive
I tested and immediately got the same issue.
I also tried booting from a FW drive and I got the same issue.
If I connect to the server over the ethernet network, I get what I would expect to be typical data transfer rates of about 20GB+ / hr. Much higher than the internal rates and I am copying data from the same internal drives so I really don't think the drive is the issue.
I called AppleCare and discussed the issue with them. They said it sounded like a controller issue so I purchased a replacement MLB from them. After replacing the drive data transfer speeds jumped back to normal for about a day maybe two.
Now we are back to experiencing slow data transfer speeds internally ( 2GB / hr ) and normal transfer speeds ( 20GB+ / hr ) over the network.
Any ideas on what might be causing the problem would be appreciated

As suggested, do check for other I/O load on the spindles. And check for general system load.
I don't know of a good GUI in-built I/O monitor here (and particularly for Tiger Server), though there is iopending and DTrace and Apple-provided [performance scripts|http://support.apple.com/kb/HT1992] with Leopard and Leopard Server. top would show you busy processes.
Also look for memory errors and memory constraints and check for anything interesting in the contents of the system logs.
The next spot after the controllers (and it's usually my first "hardware" stop for these sorts of cases, and usually before swapping the motherboard) are the disks that are involved, and whatever widgets are in the PCI slots. Loose cables, bad cables, and spindle-swaps. Yes, disks can sometimes slow down like this, and that's not usually a Good Thing. I know you think this isn't the disks, but that's one of the remaining common hardware factors. And don't presume any SMART disk monitoring has predictive value; SMART can miss a number of these cases.
(Sometimes you have to use the classic "field service" technique of swapping parts and of shutting down software pieces until the problem goes away. Then work from there.)
And the other question is around how much time and effort should be spent on this Xserve G5 box; whether you're now in the market for a replacement G5 box or a newer Intel Xserve box as a more cost-effective solution.
(How current and how reliable is your disk archive?)

Transfer speeds

What's the transfer speed mean?
On my BT Home Hub 3 with infinity 2 I notice that the data transfer rate is shown in the setup pages as varying between 54-65Mbps.
What does this mean? Why does it vary?
All my devices are wireless n technology so would I be better connecting my netgear wnr2200 as this will quite happily do 300Mbps as it did when I was with virgin.
Thanks.

If you want a 300 connection you need to choose the b/g/n 40MHz option on the HomeHub setup. (Assuming HomeHub 3B, not sure about the A). My HH3D router does not seem to have an n only option. I wouldn't want it anyway as I have some old g devices; the router is happily mixing g and n at the same time, with the n going up to 144.
I'm not sure if your Netgear is FTTC compatible; probably is. You could just replace the HomeHub as you suggest. Are you sure you were actually connecting to it at 300, rather than that the Negear was 300 capable, as is the HomeHub.
The speeds vary as various different things change the strength of the signal and the interference from outside.
Some people say they get more consistent connections if they turn off the Smart Channel, and choose a fixed channel.
If you really want to check your wireless out, install the free inSSIDer http://www.metageek.net/products/inssider/, or iStumbler on Mac. That will show other routers nearby, and the strength of signal from each. (Beware: it does report the connection speed wrong, though.)

Xserve early 2009 normal fan speed?

Can anyone tell me what the normal operating speed for the Xserve early 2009 (xserve3,1) fans is?
I'm getting speeds between 5600 and 5888 RPM in a server room at 18 degrees Celsius.
David

Hi Camelot,
Thanks for your response.
Overall, the Xserve that I'm concerned about has a light workload. It's being used as a file and web server. Most of the time CPU load is around 1% - 5%. The room temperature is at 18 degrees celsius.
The System Board fans are all between 5600 and 6000 RPM.
The Power Supply fans are both at 6656 RPM.
These values remain pretty constant.
An AXD test didn't find anything wrong with the fans or sensors.
What concerns me is that Server Monitor reports the RPM values as the maximum value in its graph. See the attached screenshot.
This is not the case with our other Xserve, which is a G4.
I want to know if other users also report this behaviour or that perhaps something is wrong with the Xserve.

What transfer speed can I expect via wired ethernet?

3 iMac's wired to an AirPort Extreme....what transfer speeds should I expect? I'm only getting 40-60MBps IMac to IMac via Ethernet provides up to 70MBps. I am wanting to get a Thunderbolt Drive but worry that while the iMac that the Thunderbolt HD is plugged into will get much faster transfer rates, when access the Thunderbolt HD from another iMac on the network I will still be stuck with the 40-60MBps rate. Surely there is a way to get faster network speeds than 40-60MBps?

Tesserax, You are are correct, I was just hoping that there was some way to get better performance out of my network speed so that the $1500 Thunderbolt purchase was worth it. What I now plan to do is get the $999 model R4 4-1TB just so I can have one since the iMac that the Thunderbolt HD will be plugged in to will be doing the most editing so in some ways it does help me....just not as much as I was hoping it would. I can at least take my old FireWire HD and plug it into my iMac and use that for FCPX projects that are for more personal than business use.
Having only 1 HD that 3 iMac's can use to edit images from has really helped me out with keeping everything in order.
If you can daisy chain the Thunderbolt Drives I have to wonder why they didn't have it so 2 iMac's couldn't connect to 1 HD. With 2 Thunderbolt ports on the iMac you would think you could connect iMacs together using 1 port on each then have the other port for like HD's, extra screens, etc You know what I mean? If you are going to make this super fast port/cable you might as well make it to connect iMacs as well.

Whats the maximum achievable speed of data transfer from RT to host PC

Hi
Anybody can tell me whats the maximum achievable speed of data transfer from RT to host PC, in case of both PXI and CompacRIO.
Regards
Visuman

Hi visuman,
To be honest, the dataspeed is dependent on how you architect the code, and the data communication channels that you use.
There are many factors that influence the maximum transfer rate, including network topology, types of interface used, OS, ambient network traffic etc.
You can control two things, packet size, and amount of sleep time between transmissions.
By altering the delay between consecutive TCP/IP transmissions and by varying the packet sizes sent from the embedded side to the host side, you can obtain a clear picture of network characteristics between the two devices. The end result is a report of the optimal TCP/IP configuration, that is packet size and sleep time.
Check out : Developer Zone : Measuring the Maximum Amount of Data Sent Out of a Real-Time Target Device
Here are some other links that maybe useful for you.
KB 2M9ARPEW : Real-Time VI to Host VI Communication Methods
Developer Zone : Real-Time FIFO for Deterministic Data Transfer Between VIs
Hope this helps!
Ashish Naik
Field Sales Engineer
National Instruments UK

Very slow transfer speeds with external hard drives through Firewire and US

Hi All,
My external drives transfer very slowly on my MacPro. I've been searching for answers and have turned up very little. Apple support suggested I post my issue here. Just to make a note, I measured my disk speeds with both AJA System Test and copying files between drives and reading the Disk Activity in Activity Monitor.
I have 3 external drives, all MyBook Premium or Professional, 1x 500GB, 1x 1TB and 2x 1TB in RAID 0. I had them on Firewire 400 and the RAID 0 2TB one on Firewire 800. My transfers on FW were all around 24MB/sec on all drives (much less than what I should be getting with FW400). I then read somewhere that the FW bus on the MacPro uses the slowest speed connected for all FW connections. So I unplugged everything but the FW800 Raid 0 drive and my transfer rate jumped to 40-60MB/sec. This is much better, but still about half or so of what I expect it should be producing from an external RAID 0 setup.
To keep my FW800 backup drive faster, I've plugged the other two into USB2.0. The transfer speeds on both drives are now hideous, around 10-15MB/sec. This is so slow, but I'm not sure what to try to fix my speeds.
The HD's in the external drives are all 7200rpm, and all should be transferring at a higher rate. Do you have any suggestions or ideas? Ideally I'd like to get everything transferring at rates they should be transferring at, but I'll settle with my current FW800 speed of 40-60MB/sec if I can get my other two drives transferring at a non-snail pace.
Is this a common issue? I can't believe I'm the only one plugging multiple external hard drives into their Mac Pro. I hope someone has a fix or solution for this. I'm all ears!
Thanks in advance.

Hi Kappy, thanks for the information.
So I rejigged my setup a tad. My RAID 0 is still FW800, the second drive is back on FW400 on the back port, and the third is USB 2.0 on the back as well.
It's interesting to note that I saw the FW800 taking a bandwidth hit if the FW400 drives was being read/written to. For example, if I was averaging 50-60MB/sec on the FW800 drives and copy something large to the FW400 drive, each drive averages out to about 30/MB second, roughly half the FW800 speed I was getting. The USB while the slowest didn't cause any slowness on the FW drives.
Here are my Xbench results. These results are from each drive being benchmarked individually with no other drives being tested at the same time.
*MyBook 2TB in a RAID 0 configuration: Firewire 800*
Results 75.42
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD My Book
Disk Test 75.42
Sequential 80.92
Uncached Write 69.16 42.46 MB/sec [4K blocks]
Uncached Write 110.79 62.68 MB/sec [256K blocks]
Uncached Read 53.66 15.70 MB/sec [4K blocks]
Uncached Read 136.76 68.73 MB/sec [256K blocks]
Random 70.62
Uncached Write 36.38 3.85 MB/sec [4K blocks]
Uncached Write 140.55 45.00 MB/sec [256K blocks]
Uncached Read 93.26 0.66 MB/sec [4K blocks]
Uncached Read 88.38 16.40 MB/sec [256K blocks]
*MyBook 1TB on Firewire 400*
Results 47.73
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD My Book
Disk Test 47.73
Sequential 52.47
Uncached Write 48.45 29.74 MB/sec [4K blocks]
Uncached Write 53.76 30.42 MB/sec [256K blocks]
Uncached Read 43.69 12.79 MB/sec [4K blocks]
Uncached Read 70.91 35.64 MB/sec [256K blocks]
Random 43.78
Uncached Write 17.29 1.83 MB/sec [4K blocks]
Uncached Write 98.83 31.64 MB/sec [256K blocks]
Uncached Read 76.33 0.54 MB/sec [4K blocks]
Uncached Read 97.01 18.00 MB/sec [256K blocks]
*MyBook 500GB on USB 2.0*
Results 40.60
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD 5000AA External
Disk Test 40.60
Sequential 35.99
Uncached Write 37.31 22.91 MB/sec [4K blocks]
Uncached Write 37.22 21.06 MB/sec [256K blocks]
Uncached Read 26.62 7.79 MB/sec [4K blocks]
Uncached Read 50.27 25.27 MB/sec [256K blocks]
Random 46.55
Uncached Write 20.37 2.16 MB/sec [4K blocks]
Uncached Write 68.44 21.91 MB/sec [256K blocks]
Uncached Read 93.55 0.66 MB/sec [4K blocks]
Uncached Read 86.71 16.09 MB/sec [256K blocks]
So Kappy are you saying that those speeds look normal?
Thanks

Thunderbolt to Ethernet adapter transfer speed

I am connecting mbp retina to the time capsule via Ethernet. What is the best cable to use, cat 5e or cat 6, would there be a noticeable difference? (I am using the thunderbolt to Ethernet adapter). What would be a normal transfer time for 100GB of data?

Although either cable will work fine with the speeds available today, you can future proof yourself a bit with a CAT6 cable.
Data normally moves over Ethernet to the Time Capsule at 25-30 GB per hour, so allow 3-4 hours for the transfer time.

Transfer speed to Airport Disk?

I have a 300GB LaCie connected to the USB2 port on my Airport Extreme Base Station. So far, this arrangement seems to be working fine in Leopard--but I'm wondering if the data-transfer rate is abnormally slow.
I have the Wireless Radio Mode set to 802.11n (802.11b/g compatible) (unfortunately, I can't go 802.11n only, or my TiVo can't connect), and the iMac I'm on is only a few feet away from the Base Station. I'm transfering a 3.5GB iMovieHD file from the iMac to the 300GB LaCie right now, and the total transfer time is about 42 minutes. Does this seem normal?

There's a bit of confusion in this thread about speeds.
Data transfer speeds are sometimes given in MegaBITS per second Mb/s and sometimes given in MegaBYTES per second MB/s. (it's easy to get them confused)
The Airport Extreme's wireless is rated at 270Mb/s.
That number does not reflect real world use (but all manufacturers use the theoretical value) What it means is that this is the maximum number of bits per second going in both directions including all the overhead stuff.
What is the maximum real world speed? In the real world the best speed you'll see copying a file from one place to another is 10MegaBYTES per second. This is very fast wireless very similar to wired ethernet. It can only be achieved when the Airport is set to 5GHz radio mode.
The USB hard drive does not achieve this speed. The CPU in the base station struggles to cope with files systems and the drive. So reading and writing you get between 3 and 6 MegaBYTES per second. The same drive would be 4 or 5 times quicker if it were plugged into your computer.
Using a NAS is faster. But this is plenty fast enough for streaming HD videos.
Jon,
Your speed is about half the regular speed for copying. Not massively slow but slower than I'd expect.
Try connecting at 5GHz n-only.
And use the graph device in Airport Utility to see if you have a poor signal strength.

File Transfer speeds in Fios Home network...

What should the normal speed (mb per second) on transferring files between two hard wire computers on a home network...
I'm averaging around 1mb per second and that doesn't seem right...
I have a normal Fios triple play setup/ all desktops connecting w/cat5 and laptops are wireless..and whatever router verizon sends with the package.
Any info on what transfer speeds would be great...
Thanks

I know there have been speed issues with Windows Vista and TCP receive window scaling. Remote differential compresion in Windows Vista should also not be installed or enable. If you have Vista be sure you have SP1 and have optimized the connections. There have also been many issues with XP to Vista. I would look at the Operating systems, and doubt very stronly that the switch in the router supplied with FIOS would have anything to do with it. Look for information on files transfers with Vista, if you are running it. I am, and love Vista but had similar issues before tweeking it.

File transfer speed in Shared USB Hard Drive via Airport Extreme

I' am planing to buy one of this, but first I need to know what kind of file transfer speed I can expect when sharing USB drive via Airport Extreme 1000Mbps Ethernet.
Thanks.
Message was edited by: Robert81

most likely 14m/sec but normally 10.5 this is ethernet wired and usb attached. wireless would be about 8M/sec
Wired is good enough I use it for Finder copy frequently.

What's normal transfer speed?

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