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Forum Discussion
ESXi 5.1 + NFS on ReadyNAS NVX + RAIDiator 4.2.22 - fixed
I'm having some time out issues where ESXi 5.1 (two HP DL360 G5's) accessing NFS share on the ReadyNAS NVX. The system seems to hang and time out for a couple of seconds while doing storage vmotion...
I'm very interested in the 'official response' on this as I just rolled out 5.1 and am connecting to an NVX over NFS for the bulk of the VM storage. I am also seeing delays though I do not have experience with this environment under 4.1 to know if they would have existed then also.
IMHO NFS is preferable to iSCSI for several reasons, easier access to snapshots, multiple host access is a no brainer, thin provisioned VMDK's are just that - thin provisioned leaving the rest of the volume available, performance can actually be better than SW iSCSI and when it isn't its very, very close. Bare metal implementations can't get much simpler then when you have an NFS export shared between two VM servers.
I suppose it can't hurt to disable VAAI (as I don't believe the RN supports it):
Unless the "official" recommendation is to downgrade to 4.2.20? :(
IMHO NFS is preferable to iSCSI for several reasons, easier access to snapshots, multiple host access is a no brainer, thin provisioned VMDK's are just that - thin provisioned leaving the rest of the volume available, performance can actually be better than SW iSCSI and when it isn't its very, very close. Bare metal implementations can't get much simpler then when you have an NFS export shared between two VM servers.
I suppose it can't hurt to disable VAAI (as I don't believe the RN supports it):
# esxcli system settings advanced set --int-value 0 --option /DataMover/HardwareAcceleratedMove
# esxcli system settings advanced set --int-value 0 --option /DataMover/HardwareAcceleratedInit
# esxcli system settings advanced set --int-value 0 --option /VMFS3/HardwareAcceleratedLocking
Unless the "official" recommendation is to downgrade to 4.2.20? :(
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