RE: ASM

My understanding is that you should set up your RAID ( of course RAID1 for the best performance ) at the hardware level and then set up your disc groups across the remaining 20 available discs. Best practices at this point seem to be to put all tables and indexes together in the same disc groups. If you are running RAC then you need ASM on each server. =20

Tony Johnson

-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Steiner, Randy Sent: Wednesday, November 03, 2004 8:13 AM To: oracle-l_at_freelists.org
Subject: ASM

I am planning the migration of my data warehouse to new blade servers with 10g on Linux. I have a san with forty 72 gig drives. I am confused about how to setup the fault tolerance with the ASM. Do I setup raid at the hardware level and then use ASM or should I just give ASM all the disks and use software level raid?
=20

Also, when creating disk groups with ASM, should I create one group for all 100 gigs of data and another group for indexes? Do I want 1 large group or several smaller ones?

=20

Also, if I have 4 blade servers, is there one ASM instance on the SAN or does each blade need a local ASM instance?

=20

Thanks

Randy

=20

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