delayed IO write errors on Windows 2012 R2 Server Virtual Machines

Question

Hi All, Good Day!

We are experiencing delayed IO write errors on two of our Windows 2012 R2 Server Virtual Machines serving as remote desktop session host. The User disk load as UPD which resides on a fileserver running windows Server 2012 R2 on a VM.  The VMs are running on KVM hypervisor. Both VMs have 14 CPU’s, 50 GB RAM. Other windows VMs on the same hypervisor/servers do not experience such issues.

There are other RDSH servers in the farm (total 8) and only two members in the farm have issue while rest of the members do not have this issue. All members connect to same fileserver. Both VMs are running on different Servers.

We have checked the hypervisors and have not found issue there. The delayed write errors are intermittent and can happen any time. We have also observed that when these issues are reported in the event logs there is no backup or any other job running which could cause high IO load. Event ID reported by the event viewer are 50, 51, 140, 137, 153

[Event-ID=50]

{Delayed Write Failed} Windows was unable to save all the data for the file. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere.

Event-ID=51

An error was detected on device \Device\Harddisk16\DR17 during a paging operation.

[Event-ID=153]

The IO operation at logical block address 0x0 for Disk 20 (PDO name: \Device\000001ff) was retried.

Event-ID=140

The system failed to flush data to the transaction log. Corruption may occur in VolumeId: \?\Volume{d68de296-3fce-11e7-813a-d80412f0d791}, DeviceName: \Device\HarddiskVolume40.

(A device which does not exist was specified.)

EVENT-ID=137

The system failed to flush data to the transaction log. Corruption may occur in VolumeId: \?\Volume{d68de296-3fce-11e7-813a-d80412f0d791}, DeviceName: \Device\HarddiskVolume40.

(A device which does not exist was specified.)

Please let me know what could be the cause of it and how can this be fixed.

Answer 1

Hi,

Your question is beyond the scope of these Forums

This Community is mainly for home users and their computer problems, not business systems.

Kindly post your question in the TechNet Server Forums.

http://social.technet.microsoft.com/Forums/windowsserver/en-US/home?category=windowsserver

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Cheers.