On Mar 13, 2009, at 1:50 PM, James Pearson <james-p@moving- picture.com> wrote:
nate wrote:
Dell should be able to tell you this.
That's what I thought ... I asked if I could get more than 2Gbit+/sec throughput to a single target from a single host - they said yes, but have not (yet) provided any useful information on how to actually set this up. I have a support call open, but I thought I'd ask here as well
- just in case anyone else had actually done this with this type of
storage.
With open-iscsi you will need to use multiple iSCSI sessions over different subnets and dm-multipath. Configure 2 portal addresses one in each subnet. If Equalogics sets the SCSI Ids correctly then dm- multipath will match them up. Set a round-robin policy on the paths and test/tune accordingly (path delays, # blocks per path, etc).
With Windows initiator you can do multiple connections over different subnets to the same iSCSI session which is more efficient, but I don't know if Equalogics supports that. You will need MS multipath for this to work too.
802.3ad balances hosts/connections between interfaces so each host or connection is limited to 1Gbps which does no good for the initiators but allows the target to handle more initiators if it supports it.
-Ross