Hi
Has anyone tried ESXi with DSS-NFS volumes? Any performance issue? I understand from the Open-E VMWare best practise that it is supported.
Rgds,
Kok-Hong
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Hi
Has anyone tried ESXi with DSS-NFS volumes? Any performance issue? I understand from the Open-E VMWare best practise that it is supported.
Rgds,
Kok-Hong
I seem to get only about 1MB/sec write...
Wonder if anyone else have tried...
G'day Kok-hong,
Some time ago we tried NFS with ESX (nbot ESXI) and we found the performnce was pretty low, I seem to recall around 4MB/s while we got (in the same test) something like 2x that with iSCSI.
We determined that NFS was good for housing the ISO's etc, but not useful for us to house the Virtual Machines. But to clarify we did not do a lot of testing/tuning etc. and it was on very low spec hardware.
What raw speeds do you get from the NFS via a direct Linux(or windows) connection rather than via VMFS?
Rgds Ben.
Hi Beng,Quote:
Originally Posted by beng
Thanks for sharing. Didn't try normal NFS...have only tried it with ESXi.
But there's certainly a lot more appeal with ESXi on NFS if performance can scale to 50~60 MB/sec range. The main attraction being that there is no 2TB LUN limit if using NFS store.
iSCSI performance is pretty good, but ESXi VMFS can only see 2TB LUN, so there is still the need to provide logical partitioning...ya I know... I am lazy, I prefer not to have to partition.
I've found that disabling the synchronous NFS settings of DSS greatly improves the performance. For an Open-E software raid, it is possible to achieve between 15~20MB/sec sequential write of 256K block. Read performance is about double that.
That's a fairly useable figure for lightly loaded VMs.