I couldn't find any readily available docs on the powervault 220, but
any direct attached SCSI array will work, on the condition that one of
your server nodes changes their SCSI initiator id. A better solution
is either firewire or little Fibre channel arrays.
In fairness to Oracle, the type of clustering they do requires that you
have some kind of reasonable storage on the backend. Deploying RAC is
difficult and generally expensive and the only real reasons to do it
are to improve scalability, improve reliability, and reduce hardware
cost. Given that RAC is more appropriate for enterprise systems,
having a certain minimum size/scope of storage on the backend doesn't
seem too unreasonable.
For development/testing environments, use firewire. It is very stable
and functional, though I wouldn't bet my business on it :)
Thanks, Matt
-- Matthew Zito GridApp Systems Email: mzito@xxxxxxxxxxx Cell: 646-220-3551 Phone: 212-358-8211 x 359 http://www.gridapp.com
thanks for your reply. You mention a disk array in your first paragraph.
Could you describe a h/w shopping list of the kit required to add a
shared disk array to 2 or more generic Linux servers (happen to be DELL
1600 SC servers). Would something like a Dell PowerVault 220 be suitable
for a 2 node system?
I must admit I feel a bit of a fool, having believed all the marketing hype when told at the various 10g conferences that RAC was built on simple cheap Linux boxes - they forgot to mention the heart of it (the database cluster) still resides on expensive SCSI disk arrays. Still I guess it's all relative. Relative to Sun kit that is.
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