Event ID ( 129 ) with Source ( LSI_SAS ) in Windows 2K8 VM

We have observed few System  Events Warning on Windows VM running with Win 2k8 R2[64 Bit] with Event ID-129 and Source:LSI_SAS

Event detail is:  Reset to device,Device\Raid Port0, was issued

Need to understand if this is something we need to look more into VM/Host configuration..as user reported data loss/timeout during that time slot.

Or if it can be ignored..didnt get more detail about event..is this due to antivirus running on machine?
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patronTechnical consultant Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
This is a known issue caused by a driver you are using in the VM

e.g. it's a buggy driver, replace the driver.

see here

Windows virtual machine event log reports the error: Reset to device, \Device\RaidPort0, was issued (2063346)
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Manojkumar RaneCommented:
This issue might occurred due to read-write latency.  If your VM files are stored on SAN LUN, move it on local datastore or disk and check the VM events. You can also check the Logs on ESXi host or Hyper-V event for the same.
Make sure that backup and antivirus scanning are not running at same time. It will create network latency and might cause this issue.
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patronTechnical consultant Author Commented:
ok, thanks..as other vms also running on same lun with no issues..so can we ignore this or if  it is related to the issue i described above like data loss on vm?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
If you have the events in the Windows OS, this VM has the buggy driver and needs replacing.

You should update and use this driver in all your VMs.
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patronTechnical consultant Author Commented:
Thanks Andrew..but this is something i am getting for few vms while i have all vms with same config ?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
If you spot this event id, you need to apply the driver update as per the Kb Article.
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patronTechnical consultant Author Commented:
Thanks
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