NSS2000 - Data transfer speeds over gigabit ethernet

I've just installed a NSS2000 on a gigabit network. I'm aware that some of the promised features (like support for jumbo frames) are not currently supported by the current firmware (version 1.13).
However, even without jumbo frames, I'm puzzled of why I am seeing data transfer speeds of only 50megabits per second, or about 5% utilization of the 1000Mb/s connection. I was expecting at least 20% utilization.
Is this another limitation of the current firmware version, or is there a setting somewhere on the NSS2000 which I need to to tweak to increase data transfer speeds?
More background - it is the only significant traffic on the network during test, the ethernet controller driver on my PC is the latest available, and the NSS reports that it is connected at 1000MB/sec. The unit has two 1.5Tb SATA drives in it, which are configuered as RAID1.
Also - does anyone know when the next firmware version is going to be available, and which of the current known issues it is likely to address?
thanks
Graham

I should mention that the volume I am writing to is encrypted - is the answer simply that this is the fastest that the onboard CPU can decrypt the content?
An experiment to an unencrypted volume increased the LAN utilization to around 10% - so an improvement, but still not as high as I had hoped.
thanks
Graham

Similar Messages

Very slow network directory listing - but fast data transfer speed once listed?

Hello,
I have really tried to sort this myself before opening up to the community, however I have run out of ideas, and hope someone can offer the magic solution I have missed.
I am currently using the 3.4ghz i7 iMac on a 1GB LAN, running OSX10.7.2 - connecting to a Windows Server 2008 (Running Release 2) over ethernet.
If i go to a network directory that i haven't recently accessed it can take up to 60 seconds to show the contents of that directory. Once i have accessed that folder, if i come out of it and go back in it will be instant again - but the first time it lists the directory it looks like i have opened an empty folder - which after anything from 10seconds to 1 minute will suddenly show the files that are there.
Internet connectivity is fast through the network, and file transfers across the LAN are fast. (showing as approx 300mb per second) I can play and edit HD content across the network with no slowdown so I am confident that this issue is not related to the network speed itself, and is more to do with a setting on this mac.
Symptoms are very similar to this post: https://discussions.apple.com/message/12245148?messageID=12245148&amp%3b#1224514 8 - however i understand that in OSX Lion - SMB was removed - so i cannot find this file to edit.
I have tried bypassing additional hubs in the network by wiring direct cables to the switch that is connected to the file server, this made no difference.
I have also tried disconnecting the ethernet cable, and running over wifi. This fixes the listing problem, but when editing HD content over a network drive, this connection is not fast enough to carry the data without interruption (some projects are linked to up to 900gb of hd video content!)
Using ethernet, I have tried DHCP, DHCP with manual address, and manual mode. All reproduce this problem. i have tried using the windows workgroup, and tried without it.
I have also followed this suggestion: https://discussions.apple.com/thread/2134936?threadID=2134936&tstart=45 and used OpenDNS. this did not fix the issue.
For argument sake, I have also just tested a Macbook Pro running Snow Leopard to see if it was OS related. This reproduces the exact same problem, near instant directory listing on the wifi, a long and arduous wait on ethernet.
I cannot work out why directory listing is instant over wifi, but not over ethernet on 2 different macs, running 2 different versions of OSX. I also do not understand why if the network is having trouble listing the directories - the data transfer speed is 300mbps when i copy files across the wired network from the file server to the mac.
Does anyone have any other ideas as to what could be the problem here? We are about to start work on a very large project, where the content we are editing is spread out across around 200 different network folders (different shoots captured over the past 2 years). We really don't have the time to wait 60 seconds each time we need to access one of those directories to look for a file, and I am very close to pulling all my hair out!
I really look forward to hearing from anyone who can offer any insight.

If you are suspecting that the Windows update had something to do with your LAN going slow, then try the following:
1. Look for updates for your clients LAN NIC driver; or
2. Un-install the updates.

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?)

Problems with Photoshop performance and data transfer speed on iMac

Two months ago, I started noticing slow performances using Photoshop (above all using clone stamp tool) on my 27" iMac (late 2012). I did the AHT and I found that 8GB of 32GB RAM were broken.
I removed them but the problem didn't disappered, I also noticed that data transfer speed (both copy and paste from/to internal HD and from CF card/external HD) was really slow.
I tried many solutions suggested by Apple support, none of them worked out. At the end, I tried uninstalling and re-installing Photoshop: no more problems!!!
10 days ago, I received a new 8GB RAM module and so I installed it back... suddenly, the problem came back, I tried re-installing again Photoshop but the problem, this time, still persist!
Does anyone had the same experience? All other CC programs work well (LR, AE, Premiere...)

yes, it does!
what seems to be very strange to me is how data trasnfer speed could be affected!
(just to say, I've already tried reset of SMC and PRAM, I've tried with different accounts and I've also re-installed the OS, next step would be formatting the disk and installing the OS from zero)

NI8451 SPI data transfer speed and SCLK setup time adjustment

I'm using NI USB-8451 SPI bus to do communication. I can not reach the speed of communication 4MHz (NI USB-8451 module advertises speeds up to 12MHz). Actrually the data transfer speed is much slower than 4/8 Mb/s. The 16k*16bit data cost around 800ms while it should be 128ms if the data transfer achieves 4Mhz speed. In the manual there is a SPI timing clock figure like this:
In the 4Mhz communication case, the t2 should be 0.25us. I wonder whether the low data transfer speed is due to t1,t3 and t4 since they occupy too much "dead time". If my guess is right, is there any method to reduce the t1,t3 or t4, espetially t3? I know that in the advanced API there is a way to add delay while I did not figure out how to reduce delay(t3). If my guess is wrong, what is the exactly maximum data transfer speed NI8451 can support? (not the clock rate)
Thanks for help.

Hi everyone. Im using the SPI communication with 8451 and Im having the same situation., since the serial flash memory I need to program is big enough, t3 (SCLK Setup time) and other "dead time" which I think is the time when buffer on the 8451 needs to be re-filled those are killing my expectation on the final results. I can't see a way to decrease t3 (~10uSec) and in the same way Im seeing something like buffering up to 100~110 bytes then, a ~1.5mSec delay appears on the signal waveforms. Did somebody have good results trying to avoid this?
Thank you.
Javier
Attachments:
t3 - SCLK setup time.jpg ‏156 KB
Data byte Transfer_109.jpg ‏137 KB

What file transfer speeds are possible over Gigabit Ethernet - Hatter?

Thanks in advance for taking the time to consider this.
Our still photgraphic studio has a range of MACs all connected via a gigabit D-Link switch to a series of Buffalo NAS raids. Wiring is CAT5e, all devices have gigabit ethernet cards and the link lights on the switch suggest that all devices are connected at that speed.
We currently get file transfer rates of between 5 and 12 MB/s depending on network traffic.
We would like to upgrade our NAS to a NAS/SAN, preferably using the existing wiring (and avoid the expense of Fibrenet). 50 or 60MB/s would be great if possible.
Any ideas for a suitable archtecture and Hardware would be gratefully received. Cable lengths are a maximum of 30 metres.
Paul

I'm getting sustained speeds of 90-100 megabytes/second on a transfer across GigE from one mac to another, both working on high-capacity SATA drives.
It drops to ~65 megabytes per second if the source drive is my 2TB Firewire 800 external.
both rates are right on the real-world maximum for GigE and FW800 respectively, which is a great sign that nothing else is bottlenecking the transfer.
My experience with NAS boxes has been disappointing in the past, with transfer rates of 5-35 MB/sec - painfully slow for large files, which destroys the purpose of NAS for me, which is reasonably high-speed off-computer storage.
I'm MUCH happier, and didn't have to pay very much to set up a Mac with 4 SATA drives onboard, acting as a file server... I'm actually getting files FASTER than I am from a FW800 drive directly attached now.

AirPort Extreme (802.11n) File Transfer Speeds Over Ethernet

I tested the transfer time for a 1.33GB file from one computer to another under four conditions. Both computers support gigabit Ethernet, and all cabling is Category 6.
Condition 1: Both computers were directly connected to a pre-gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 128 seconds.
Condition 2: Both computers were directly connected to an 8-port D-Link DGS-2208 gigabit switch, which in turn was connected to a pre-gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 72 seconds.
Condition 3: Both computers were directly connected to an 8-port D-Link DGS-2208 gigabit switch, which in turn was connected to a gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 55 seconds.
Condition 4: Both computers were directly connected to a gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 28 seconds.
Tentative Conclusions: Using a gigabit switch as the parallel connecting device when the router is pre- or non-gigabit is helpful. Using a gigabit switch as the connecting device when the router is also gigabit is hurtful with respect to transfer time.
I would appreciate any comments.

I re-ran the tests several times, taking care to "pre-warm" the connections by rebooting the router (and the switch when applicable) and making one false start, stopping the first transfer and then starting the timed transfer.
The transfer times when no switch was involved were virtually the same as I reported earlier, with the gigabit router significantly outperforming the pre-gigabit AEBS (it was 5.73 times slower). Interestingly, the transfers via the gigabit switch were virtually as fast as a pure transfer using only the gigabit router.
And there was no difference in the gigabit switch-employed transfer times regardless of whether a pre-gigabit or gigabit router was used. Here is my revised conclusion:
Using a gigabit switch with Apple's pre-gigabit 802.11n router overcomes the slowness associated with a pre-gigabit router provided that pre-warming techniques are employed.

How to increase AFP data transfer speed?

When I connect to our server from a WAN source outside of our facility the file data transfer rate is extremely slow. We just upgraded to a 10Mps fiber service and that has dematically increased our website data tranfer speed. I would like to find a way to access the file server from remote location and work, but the data transfer rate makes productivity impossible. I would appreciate hearing how other organizations are set-up and functioning with file transfer sizes at an average of 10 to 15 Mb.
Thanks,
Brian
OS10.6.8 Server,

If you don't have enough network bandwidth for your time requirements, you have little chance of success with the direct approach. Techniques such as file compression and such can only provide limited help. If you're transfering multiple copies of the files, then you can push one copy of the file to a hosted provider, and then serve additional copies from there.
As for your network, a ten million bits per second network connection is the speed of first-generation Ethernet. That Ethernet was a fast network, back in 1985. In the era of a one billion bits per second Gigabit Ethernet and increasingly commonly with the ten gigabit Ethernet links, a 10 Mb link is glacial.
A typical DSL network is asymmetric, meaning you'll have 10 Mb down (theoretically) and some fraction of that up. So you might not be getting that 10 Mb in the direction you're coppying files. And this is best case; various of the ISP network links around aren't providing their rated speeds.
AFP stinks on a network, and you're also opening up your file system to remote attackers.
As for WebDAV, read this. In addition to WebDAV, you can also try an sftp or other "simpler" copy command as a test, and see what you get for that. (sftp is also encrypted, which has benefits, though the encryption also requires more processing time.)
But beyond techniques such as data compression (and which may or may not be an option here) or incremental or "delta" changes to the data (which probably isn't an option here) or working locally and batching over the changes, there are few good ways to contend with a too-slow-for-your-needs link.

How do I maximize LAN speeds using Gigabit Ethernet, jumbo frames?

I move a lot of large files (RAW photos, music and video) around my internal network, and I'm trying to squeeze out the fastest transfer speeds possible. My question has to do both with decisions about hardware and what settings to use once it's all hooked up.
This is what I have so far:
-- imac 3.06GHz, macbook pro 2.53GHz
-- Cisco gigabit smart switch capable of jumbo frames
-- Buffalo Terastation Duo NAS (network attached storage), also capable of Gbit and jumbo frames
-- All wired up with either cat6 or cat53e.
-- The sizes of the files I'm moving would include large #s of files at either 15MB (photos), 7MB (music), 1-2GB (video) and 650MB (also video).
-- jumbo frames have been enabled in the settings of the macs, the switch and the buffalo HD.
-- I've played with various settings of simultaneous connections (more of a help with smaller files), no real difference
-- Network utility shows the ethernet set to Gbit, with no errors or collisions.
-- have tried both ftp and the finder's drap and drop
-- also, whenever I'm doing a major move of data, I kick my family off the network, so there is no other traffic that should be interfering.
Even with all that, I'm still lucky to get transfer speeds at 15-20mbps, but more commonly at around 10. The other odd thing I've encountered while trying to up my speeds, is that I might start out a transfer at maybe 60mbps, it will maintain that for about 30-60sec and then it appears to ramp itself down, sometimes to as low as 1-5mbps. I'm starting to think my network is mocking me
I also have a dual band (2.4/5) wireless n router (not jumbo frame capable), but I'm assuming wired is going to trump wireless? (NOTE: in my tests, I have disabled wireless to force the connection through the ethernet).
Can anyone help with suggestions, and/or suggest a strong networking reference book with emphasis on mac? I'm willing to invest in additional equipment within reason.
Thanks in advance!
juliana

I'm going to pick and choose to answer just a few of the items you have listed. Hopefully others will address other items.
• This setup was getting me speeds as high as 10-15MB/sec, and as low as 5-6MB/sec when I was transferring video files around 1-2 GB in size
I would think a single large file would get the best sustained transfer rates, as you have less create new file overhead on the destination device. It is disturbing that the large files transfer at a slower rate.
• Would a RAID0 config get me faster write speeds than RAID1? I have another NAS that can do other RAID configs, which is fastest as far as write times?
RAID0 (Striped) is generally faster, as the I/O is spread across 2 disks.
RAID1 is mirrored, so you can not free the buffer until the same data is on BOTH disks. The disks are NOT going to be in rotational sync, so at least one of the disks will have to wait longer for the write sectors to move under the write heads.
But RAID1 gives you redundency. RAID0 has not redundency. And you can NOT switch back and forth between the 2 without reformatting your disks, so if you choose RAID0, you do not get redundency unless you provide your own via a backup device for your NAS.
• what is the most efficient transfer protocol? ftp? smb? something else? And am I better off invoking the protocol from the terminal, or is the overhead of an app-based client negligible?
Test the different transfers using a large file (100's of MB or a GB sized file would be good as a test file).
I've had good file transfers with AFP file sharing, but not knowing anything about your NAS, I do not know if it supports AFP, and if it does, whether it is a good implementation.
If your NAS supports ssh, then I would try scp instead of ftp. scp is like using cp only it works over the network.
If your NAS support rsync, that would be even better, as it has the ability to just copy files that are either NOT on the destination or update files which have changed, but leave the matching files alone.
This would help in situations where you cannot copy everything all at once.
But no matter what you choose, you should measure your performance so you choose something that is good enough.
• If a client is fine, does anyone have a suggestion as to best one for speed? Doesn't have to be free -- I don't mind supporting good software.
Again just test what you have.
• Whats a good number to allow for simultaneous connections, given the number of files and their size?
If the bottleneck is the NAS, then adding more I/O that will force the disk heads to move away from the current file being written will just slow things down.
But try 2 connections and measure your performance. If it gets better, then maybe the NAS is not the bottleneck.
• What question am I not asking?
You should try using another system as a test destination device in the network setup to see if it gets better, worse, or the same throughput as the NAS. You need to see about changing things in your setup to isolate where the problem might be.
Also do not rule out bad ethernet cables, so switch them out as well. For example, there was a time I tried to use Gigabit ethernet, but could only get 100BaseT. I even purchased a new gigabit switch, thinking the 1st was just not up to the task. It turned out I had a cheap ethernet cable that only had 4 wires instead of 8 and was not capable of gigabit speeds. An ethernet cable that has a broken wire or connector could exhibit similar performance issues.
So change anything and everything in your setup, one item at a time and use the same test so you have a pear to pear comparision.

I get slow *** tranzfer speeds over da Ethernet. Why dis?

Hello, I have a pc running windows 8.1 and a Mac Pro (2006 edition) that are on the same router (both via ethernet). I have them both connected to each other using their respective "connect to another computer" features, and thus can access each other's hard drives. With that said, when I transfer data from one to the other (say, from the Mac to the PC), it results in slow *** transfer speeds (between 4 and 10 MB/s max). Why? (I have accounted for the usual-suspect variables, such as hard drives, and ethernet cables by using different hard drives and ethernet cables.) it has been at 3 MB/s for about 40 minutes now. Why?

Each computer should be wired to your Gigabit Ethernet capable SWITCH or Router. If you do not have a Gigabit Ethernet capable SWITCH or your Router ports are slower than Gigabit speed, Apple sells a five-port Gigabit Ethernet SWITCH in the Apple online store for about US$55.
Computer-to-Computer File transfers are handled directly by the SWITCH, they do not need to use the Router function.
Gigabit Ethernet requires cables with all 8 wires present, and Power-over-Ethernet is not allowed on those cables.

Slow transfer speed over VPN connection

Hello,
Recently I setup an SSL VPN to connect to my parent's home network. I have some computers there, and want to try to transfer files between my computer and the one at my parent's. Over the VPN connection, I only get 128kb/s. On both ends, they are 15Mbps connections, and can support internal copies of 4 megs/s. I feel like I should get a better speed than that. I looked around, and people suggested changing the MTU. I have changed the MTU around, and not noticed any increase in the network speed over the VPN. Currently the MTU is at 1500. Below is a copy of my running config. Any thing I'm overlooking, or is this speed normal? Sorry, still relatively new to the ASA 5505.
ASA Version 8.2(5)
hostname HardmanASA
enable password #####
passwd ###### encrypted
names
interface Ethernet0/0
switchport access vlan 20
interface Ethernet0/1
switchport access vlan 10
interface Ethernet0/2
switchport access vlan 10
interface Ethernet0/3
shutdown
interface Ethernet0/4
shutdown
interface Ethernet0/5
shutdown
interface Ethernet0/6
shutdown
interface Ethernet0/7
switchport access vlan 10
interface Vlan1
no nameif
no security-level
no ip address
interface Vlan10
nameif inside
security-level 100
ip address 192.168.250.1 255.255.255.0
interface Vlan20
nameif outside
security-level 0
ip address dhcp setroute
ftp mode passive
dns domain-lookup inside
dns domain-lookup outside
access-list nat_0 extended permit ip 192.168.250.0 255.255.255.0 192.168.251.0 255.255.255.0
access-list split_tunnel standard permit 192.168.250.0 255.255.255.0
pager lines 24
mtu inside 1500
mtu outside 1500
ip local pool VPN_Pool 192.168.251.100-192.168.251.101 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (outside) 10 interface
nat (inside) 0 access-list nat_0
nat (inside) 10 192.168.250.0 255.255.255.0
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
aaa authentication ssh console LOCAL
http server enable
http 192.168.250.0 255.255.255.0 inside
http 192.168.251.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet timeout 5
ssh 192.168.250.0 255.255.255.0 inside
ssh 192.168.251.0 255.255.255.0 inside
ssh timeout 5
ssh version 2
console timeout 0
management-access inside
dhcpd dns 8.8.8.8
dhcpd address 192.168.250.20-192.168.250.50 inside
dhcpd enable inside
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
enable outside
svc image disk0:/anyconnect-win-2.5.2014-k9.pkg 1
svc image disk0:/anyconnect-macosx-i386-2.5.2014-k9.pkg 2
svc image disk0:/anyconnect-linux-2.5.2014-k9.pkg 3
svc enable
tunnel-group-list enable
group-policy DfltGrpPolicy attributes
dns-server value 8.8.8.8
vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
split-tunnel-policy tunnelspecified
split-tunnel-network-list value split_tunnel
username ###### password ###### encrypted
tunnel-group AnyConnect type remote-access
tunnel-group AnyConnect general-attributes
address-pool VPN_Pool
tunnel-group AnyConnect webvpn-attributes
group-alias AnyConnect enable
class-map inspection_default
match default-inspection-traffic
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect ip-options
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email [email protected]
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
Cryptochecksum:74fc2287573841a837e97887840a2d91
: end

Hi,
Another option is the use of the compression command, this is usually enabled by default but maybe you can enter it due to is not showed in the running config, the command is compression svc.
Note: The command helps when we have low bandwitdh connections, the command reduces the size if the packets, for broadband connections this can decrease regular performance
Regards,
Sent from Cisco Technical Support iPhone App

Time Capsule data transfer speeds

Hi,
I just bought the 1TB Time Capsule. I'm copying 117GB from MacPro to TC which after an extremely slow start 12Mbps is now bouncing around between 80 and 120Mbps. For Gigabit Ethernet (CAT6) these speeds are not impressive. Out of curiosity, what does everyone else see? I've had 2 Macs connected together at 450Mbps so was expecting similar from TC with its "server-grade" hard disk.

VUser50 wrote:
You don't need a modem with FIOS, you can just get rid of the VZ router and replace it with your own (you call Verizon to get them to change your connection from COAX, the same thing that goes to your tv, to ethernet from your ONT) but will lose video on demand on your tv and caller id on tv. If you want those to stay you can keep the VZ box and play with configurations listed here.
Think you should actually say that without the router you'd lose fios tv completely (it has to be in the network somewhere to provide coax signals), though possibly you could connect a coax cable from the ont directly to 1 tv.

SuperDrive slow Data Transfer Speeds

I have several home movies DVDs I would like to loadback onto my mid-2011 27" iMac but it is taking for ever to complete the transfer. One DVD disk takes 6 hours because the transfer speed is crawling. I read up onthis and info says my HL-DT-STDVDRW GA32N (FirmwareVersion KE06) is made by HLDS and they have implemented riplock which slows the data speed way down to preserve SuperDrive life expectancy anddecrease noise level. How can I disable this riplock to restore the data speed. I bought this fast/expensive machine and the SuperDrive of all things is slowing medown. Completely unacceptable.

I was having a problem ripping store bought CD's to ITunes and opened a case with Apple for suspected hardware issue. Turns out the problem was Norton AntiVirus by Symantec which was blocking my external drives. Even though the CD is internal it was killing it. Once I shut off Norton everthing started working.
The way I came to figure out it was a Software and not hardware issue was that the Superdrive worked perfectly under Windows 7 inside of VMWare Fusiion.
If you have any sort of AntiVirus, try shutting and down and using the Superdrive.
My machine is the same , late 2011 with Firmware KE06

Data Transfer Speed

I inserted a data CD and copied & pasted a file from the CD to my MacBook hard drive. I could see that the speed of file transfer was about 2mb per sec. I also tried to copy and paste a file from a data DVD, and the result was the same. Has anyone tried moving files from a disc to MacBook hard drive? My optical drive is HL-DT-ST DVDRW GS21N.

same problem here...
burning speed is fine..when reading from the same media, the transfer speed hardly hits 1mb / sek
this affects DVDs and CDs...
LG GS21N

Data transfer speed question

I am consolidating all of my old back up drives onto a single 1tb TC. I am surprised at the transfer speed however. I have the TC connected via ethernet but it is taking hours to move even a couple of gigs. At this rate it's going to take all week. I feel like I must have done something incorrectly.
Is it the write speed that is so slow?

WGulliver,
Consider these points, see if they have any bearing on your situation.
*Anti-Virus Software*
Are you running anti-virus software. Disable it and see if network speeds improve. The discussion boards are filled with users who are experiencing degraded network speeds due to their anti-virus software.
One poster observed: “I had the exact same problem 5 mins ago, it had taken 2 hours to back up 2GB, I realized I installed Sophos anti virus a couple of days ago. When I turned that off my back up is speeding through.”
Another contributor stated, “I am doing the first backup to my time capsule, about 71 Gb, It seems to be going about 1 Gb per hour. is this seem OK? I tried the ethernet connection and the speed was about the same. It has been going all night and after 12 hours it is at only 12 Gb of 71….I found the problem, I uninstalled Norton and the problem went away. It backed up in about 3 or 4 hours”
*Wireless Security Issue*
Some who have experienced degraded network speeds have isolated the problem to their wireless security setup. Try this:
Launch Airport Utility
Select your Time Capsule on the left.
Click “Manual Setup”.
Select “Airport” in the toolbar.
Click the “Wireless” tab.
Change “Wireless Security” to “None”.
Click “Update” in the lower right hand corner.
Wait for the Time Capsule to restart and then see if your network speeds improve.
Granted, this is far from desirable. But it does help to isolate the problem in you instance.
Let us know if either of these procedures helped.

NSS2000 - Data transfer speeds over gigabit ethernet

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