There's a configuration issue in there somewhere. I have a ZFS based
system serving up to some ESX servers working great with a few
exceptions.
First off perf was awful, but there was some confusion on how to
optimize network traffic on ESX so I installed a fresh one using only
the defaults, no jumbo frames, no etherchannel and I was able to push
the ZFS server to wire speed read and write over iSCSI. I still have
the write problem over NFS though. I should be back in the datacenter
tomorrow to see if it's specific to the ESX NFS client.
So my advice is to start looking at all of the tweaks that have been
applied to the networking setup on the Xen side first.
Cordialement,
Erik Ableson
+33.6.80.83.58.28
Envoyé depuis mon iPhone
On 18 juin 2009, at 21:06, lawrence ho <no-re...@opensolaris.org> wrote:
We have a 7110 on try and buy program.
We tried using the 7110 with XEN Server 5 over iSCSI and NFS.
Nothing seems to solve the slow write problem. Within the VM, we
observed around 8MB/s on writes. Read performance is fantastic. Some
troubleshooting was done with local SUN rep. The conclusion is that
7110 does not have write cache in forms of SSD or controller DRAM
write cache. The solution from SUN is to buy StorageTek or 7000
series model with SSD write cache.
Adam, please advise if there any fixes for 7110. I am still shopping
for SAN and would rather buy a 7100 than a StorageTek or something
else.
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