Slow Migration between iSCSI LUNS

[GavinRamm]

hi,

Using ESX 3.5 Update 3 with a All-In-One HP iSCSI Storage Server.

When I migrate from local storage on the ESX host to the iSCSI storage server its quick.

Once the VM is on the stroage server i attempt to migrate from LUN1 to LUN2 (both on the same Storage server) the result is a very very slow migration..

[malaysiavm]

When it become slow, what is the utilization of the Disk performance from ESX host? You can try to match the performance with the available bandwidth you have for storage I/O on ESX host to further analyze

Craig

Malaysia VMware Communities -

[GavinRamm]

when I migrate FROM the ESX host local storage to the iSCSI lun its fine.. nice and quick.. roughly 70% Network Util...

Migrating the VM from LUN1 (stroageserver1) to LUN2 (storageserver1) then I get a very slow migration.. 10mb/sec network.. I/O util looks fine also..

[malaysiavm]

Do you have multiple NICs teaming for your software ISCSI initiator?

Craig

Malaysia VMware Communities -

[GavinRamm]

Yes I have four NIC's teamed... two going into one switch and two going into another switch...

on the ESX server I have the same...

[GavinRamm]

I dropped the teaming and put a single nic on the iSCSI network on ESX and now its zooming along nice..

My question now is why did my teaming going up the creek and how do I set it up to use teaming correctly?