These are datastore timeouts, where the datastore heartbeat has not responded withing the timeout period. Are you seeing any PowerPath or NMP messages relating to path failures in the vmkernel.log?
Any SCSI errors in the vmkernel.log?
Any device latency warnings?
Other performance issues being reported from the VNX?
Care to post up any errors from that log (with customer's permission)
just discovered your post and seen that nobody provided feedback here. I suppose you might have discovered the root cause. For that what you shared it's difficult to really advice. Things I would look at:
"Flipping" HBA as the SP "owner" in a VNX system (if it's a VNX) is trying to fail back, as well known as "trespassing"
HBA, fibre or anything else having physicalla a connectivity issue
Try to check the fiber ports mapping on your "server's" SAN HBA, in some cases administrators forget to fix the port mapping probably and the connections might get lost if the connection fails over on a disconnected port.
hanacd
34 Posts
0
April 14th, 2014 08:00
And discovered that there is a similar post some time ago, suggesting similar points as I did just with some more specifics where to look at for it https://community.emc.com/message/793297?et=watches.email.thread#793297
Are you seeing any PowerPath or NMP messages relating to path failures in the vmkernel.log?
Care to post up any errors from that log (with customer's permission)
hanacd
34 Posts
0
April 14th, 2014 08:00
Hello tdubb,
just discovered your post and seen that nobody provided feedback here. I suppose you might have discovered the root cause. For that what you shared it's difficult to really advice. Things I would look at:
And of course, if you haven't done, so - contact EMC support at http://support.emc.com
Let us know if and how you resolved the issue.
r0ck1
3 Posts
0
April 30th, 2014 01:00
Try to check the fiber ports mapping on your "server's" SAN HBA, in some cases administrators forget to fix the port mapping probably and the connections might get lost if the connection fails over on a disconnected port.