[CentOS] OT iSCSI best practices
ugob at lubik.ca
Wed Apr 8 13:38:30 UTC 2009
I have an HP MSA 2000i as SAN (iSCSI) and since I'm starting with SANs,
I'm seeking for advice. We are currently using HP Proliant 380 G5 + MSA
70 (SAS, direct-attached storage) for our production servers.
At first, I thought I'd be using the SAN only for non-critical
operations, like temporary additional storage for disk-based backups and
snapshots, so I planned on using my existing network equipement to
connect the SAN. Now I'd like to use it as storage for some blade
servers that I want to use for virtualisation, so reliability is more
I'd just like to evaluate the risk, to make sure I plan correctly. The
SAN is a dual controller, dual-port, with a mix of RAID10 and RAID 50
arrays, so this is pretty solid. However, if I'm using only one switch
to connect the initiators to this SAN, is it more risky than relying on
the non-redundant RAID controllers that are in my HP servers?
If it is recommended that I use multipathing, I guess that means 2
switches, additionnal nics but also another interconnect in the blade
If you need more information, just let me know :).
Thanks in advance,
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