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тАО06-04-2010 06:21 AM
тАО06-04-2010 06:21 AM
I have never seen 1GB/s inside c7000
Every status in interconnects is 1 GB.
There are Windows 2003 SP2 Enterprise installed on two servers. I have never (never!!!) seen 1 Gb/s. I make some download threads from first to second and summary maximum is 20-25 MB/second.
Why bl460c has 1GB network card?
Why new bl460c had 10 GB network card?
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тАО06-04-2010 06:42 AM
тАО06-04-2010 06:42 AM
Re: I have never seen 1GB/s inside c7000
The bl460c G1 has 1Gb/s NICs. Does this mean that you will get wirespeed 1Gb/s on a file copy? Doubtful. You might be able to approach 1Gb/s by using a network performance benchmarking tool like netperf, iperf, etc. that bypasses disk i/o subsystem.
Those BL460c G1 servers have TCP Offload Engine capable NICs and TOE has never worked right. With Windows 2003 SP2 TOE is enabled by default. I recommend disabling TCP Offload Engine on your NICs and see if your file transfer speeds improve.
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тАО06-04-2010 06:52 AM
тАО06-04-2010 06:52 AM
Re: I have never seen 1GB/s inside c7000
Yes, i expect to get something about 100 megabytes per second.
I have 20-25 megabytes/s everything - Windows, SuSE, ESX.
What is my blunder?
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тАО06-04-2010 06:55 AM
тАО06-04-2010 06:55 AM
Re: I have never seen 1GB/s inside c7000
I know that really speed can be 40-50 megabytes/s.
There is my 40-50 MB/s?
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тАО06-04-2010 07:03 AM
тАО06-04-2010 07:03 AM
Re: I have never seen 1GB/s inside c7000
disk performance affects network performance, if disks cannot writte fast enough, network data goes into a queue until it can writte on disk. RAID levels, amount of disks in raid,type of disk, controller cache size, stripped size, firmware and few other things affect disk performance
regarding TOE and RSS (part of the scalable network pack or SNP), both were created to increse network speed but they give more headaches than solutions on windows 2003. more details on microsoft web site http://support.microsoft.com/kb/948496
if applicable to you, you can create a network team, like SLB to duplicate troughtput, check HP NCU
regards,
JQ
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тАО06-04-2010 07:13 AM
тАО06-04-2010 07:13 AM
Re: I have never seen 1GB/s inside c7000
Do you mean 25 MB/s is maximum for E200i RAID 10?
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тАО06-04-2010 08:12 AM
тАО06-04-2010 08:12 AM
Re: I have never seen 1GB/s inside c7000
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тАО06-05-2010 09:04 AM
тАО06-05-2010 09:04 AM
Re: I have never seen 1GB/s inside c7000
* Backup Network
* Management Network
* Application Network
* VMotion Network
etc...
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тАО06-06-2010 10:14 PM
тАО06-06-2010 10:14 PM
Re: I have never seen 1GB/s inside c7000
Controller doing nothing, cache is 64 Mb.
Can you post your speeds between blade-servers via ftp?
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тАО06-08-2010 09:41 PM
тАО06-08-2010 09:41 PM
Re: I have never seen 1GB/s inside c7000
I would recommend starting by googling "iperf" and looking to do an actual network test. You will probably find you are able to push gigabit speeds, or very close to them.
What is doing your networking? You mention the NICs but you don't mention your switches.