Re: RAC storage options
- From: Mladen Gogala <mladen@xxxxxxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 13 Apr 2004 16:09:58 -0400
You must have physical disks shared between two or more computers. That, in
particular, automatically
eliminates NFS, CIFS (SMB) and other file sharing protocols. Netapp (used by
our company) is not
an NFS server, it implements locking and is a SAN implementation disguised as
NFS. Operating
system must be able to lock blocks on the device and prevent other nodes from
accessing the
same block. That is not supported by NFS3 protocol. There are several SAN
vendors, not just
NetApp and EMC. There is IBM, StorageTek, Dell, HP, Hitachi and EqualLogic and
probably some others that
I don't know about (however unlikely that might seem). All those vendors are
more then willing to
discuss RAC and offer solutions. PC and printer companies (at least according
to Mr. Scott McNealy)
are willing to offer aggressive discounts to undersell EMC, IBM and StorageTek,
which are the
biggest players in the field. IBM also offers agressive pricing with their
Shark array and is
trying to wrestle a chunk of the lucrative SAN market from EMC.
On 04/13/2004 03:06:58 PM, Daniel Hanks wrote:
> We're looking to upgrade our current database architecture, to something that
> will handle potentially 3-4 times our current load/size, etc. We're looking
> at RAC as an option, but I'm wondering what storage options are available for
> RAC. At a Technology Day about a year or so back, they showed a small RAC
> cluster using a NetApp for the shared storage component. What other storage
> options are available? EMC is the obvious other, but what else is
> available/supported? Anything that serves lots of disk via NFS?
--
Mladen Gogala
Oracle DBA
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