Montag, 6. Februar 2012 16:22Hi All,
I am facing a weird disk I/O issue on my Hyper-V node. I have 4 x 1TB disks in RAID-10. We have around 10 Virtual Machines running and still there is some issue with the disk I/O.
When we perform a disk intensive activity on the node, then the Disk I/O can easily go upto 150Mbps. But when any disk intensive activity is performed on a VPS, the disk I/O cannot go over 10Mbps even when there isn't any load on the node.
Would really appreciate a little help in this regard. Is there some setting which has to be changed so that VPS can overcome the disk I/O bottleneck of 10mbps?
Thanks in advance!
- Verschoben Kristian NeseMVP Montag, 20. Februar 2012 12:15 (From:Cloud Computing: Infrastructure as a Service)
Dienstag, 3. April 2012 05:04
You are specifically seeing this performance issue when copying data within the virtual machines? Under what circumstances do you see the IO difference? If you could describe your situation a little further that would help.
Dienstag, 3. April 2012 12:40
How are your nodes connected to the shared storage?
If via iSCSI check your links, cables, and switch settings. Might be a bad link in there running at 100Mbit if your throughput is at 10MB/Second (MB = Megabytes Mb = Megabits).
Philip Elder SBS MVP Blog: http://blog.mpecsinc.ca
Freitag, 11. Mai 2012 04:03
Can you try applying this update and see if it fixes the problem?
Freitag, 11. Mai 2012 06:14I have experience the same at my own server and other clients aswell, without any luck, so looking forward to see the outcome of this question. What kind of hard-drives do you run? SATA, Nearline SAS or SAS?
Freitag, 11. Mai 2012 21:59
I'd go through the list of recomended hotfixes first, then see if you still have the problem.
You may also want to disable C states.