HP LeftHand SAN Solutions Support Document - Application Notes - QLogic HBAs and the LeftHand SAN 20071223

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SAN/iQ remote copy
SAN/iQ remote copy allows SAN/iQ snapshots to be copied over WAN links to
remote sites for disaster recovery or locally to clone a volume to the same
SAN/iQ cluster. QLogic iSCSI HBA environments can be replicated by SAN/iQ
on a scheduled basis for the simplest and most complete DR solution. Remote
Copy can also be used for cloning a volume locally and is a good way to copy
and deploy additional QLogic HBA volumes for boot farm environments. For
example, a SAN/iQ volume with a QLogic HBA iSCSI Initiator server that was
prepped into a distributable boot image could be remote copied locally to
deploy many similar Boot from SAN servers quickly. For more information on
SAN/iQ remote copy go to https://www.lefthandnetworks.com/
member_area/index.php
Best Practices
The LeftHand Networks and QLogic iSCSI SAN network should be
separate from the LAN traffic. This may be accomplished by subnet
broadcast domains, VLANs, or physically separate networks.
Separating networks by functionality, iSCSI, Servers, Client Access, provides
higher reliability, minimal security and maximizes segment performance of
those functions.
Select the “Enable load balancing” check box for
improved performance.
The Load Balancing feature of a SAN/iQ authentication group allows iSCSI
connections to be re-directed to the least busy storage node in the cluster. This
keeps the load on storage nodes throughout the cluster as even as possible and
improves performance of the SAN overall.