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Scale Out File Server Slow Write Speed
Hi
I am in the process of setting up a Scale Out File Server. So far it is all going well, I have my SOFS shares up and running and am now testing connectivity between a Hyper-V host & a SOFS share.
I can open the share and use it no problem. Failover works fine. The problem I am having is slow write speed to the SOFS share.
I have two SOFS, each with 1 X Dual Port 10G NIC. These in turn are connected to 2 X Netgear XS712T 10G switches. The NICs are Teamed. The Hyper-V Host also has 1 X dual port 10G NIC connected to the 10G Netgear switches. The NIC is teamed.
When I write a file from the Hyper-V host to the SOFS it maxes out at 125Mbp/s. I have confirmed that the SMB traffic is going via the 10G Team.
If I copy a file FROM the SOFS to the local disk on the Hyper-V Server the speed increases up to 350Mbp/s.
The underlying storage is a Dell MD3220 with 8 15K & 16 10K drives. If I copy a file between each disk group using via the CSV shares the write speed is 800Mbp/s so I am confident the storage is fast enough.
I have tried enabling Jumbo Frames & not using NIC Teaming (slower without the team).
I am not sure what else to try.
Any suggestions appreciated.
Many thanks
I am in the process of setting up a Scale Out File Server. So far it is all going well, I have my SOFS shares up and running and am now testing connectivity between a Hyper-V host & a SOFS share.
I can open the share and use it no problem. Failover works fine. The problem I am having is slow write speed to the SOFS share.
I have two SOFS, each with 1 X Dual Port 10G NIC. These in turn are connected to 2 X Netgear XS712T 10G switches. The NICs are Teamed. The Hyper-V Host also has 1 X dual port 10G NIC connected to the 10G Netgear switches. The NIC is teamed.
When I write a file from the Hyper-V host to the SOFS it maxes out at 125Mbp/s. I have confirmed that the SMB traffic is going via the 10G Team.
If I copy a file FROM the SOFS to the local disk on the Hyper-V Server the speed increases up to 350Mbp/s.
The underlying storage is a Dell MD3220 with 8 15K & 16 10K drives. If I copy a file between each disk group using via the CSV shares the write speed is 800Mbp/s so I am confident the storage is fast enough.
I have tried enabling Jumbo Frames & not using NIC Teaming (slower without the team).
I am not sure what else to try.
Any suggestions appreciated.
Many thanks
ASKER
Hi
Thanks for your reply. If I set up a SMB 3.0 share on either HV host then the transfer speed is 1GB/s until the disk cache is full, then about 170MB/s
Thanks for the link, but it did not help me resolve the problem
Thanks for your reply. If I set up a SMB 3.0 share on either HV host then the transfer speed is 1GB/s until the disk cache is full, then about 170MB/s
Thanks for the link, but it did not help me resolve the problem
I'm having the exact same problem as you but even worse. I'm all on 1Gbe though....
http://mobile.experts-exchange.com/questions/28534232/Lan-speed-test-on-SoFS-CSV-2012-R2-Can-anyone-explain-this-slowness.html?anchorAnswerId=40369893#a40369893
http://mobile.experts-exchange.com/questions/28534232/Lan-speed-test-on-SoFS-CSV-2012-R2-Can-anyone-explain-this-slowness.html?anchorAnswerId=40369893#a40369893
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ASKER
TechNet blog post answers question
Have a look at this link and hope it turns help full at some means...
http://www.petri.co.il/windows-server-2012-smb-3-scale-out-file-server.htm
Cheers..!!