[CentOS] OT iSCSI best practices

Ugo Bellavance ugob at lubik.ca
Thu Apr 9 15:32:49 UTC 2009

Ugo Bellavance a écrit :
> Hi,
> 	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 
> important.
> 	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 
> enclosure?
> If you need more information, just let me know :).

I realized this might be too OT, so I posted here...


There are interresting answers.

Regards and sorry for the noise.


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