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RE: OFA and Shared Storage

From: Mercadante, Thomas F <NDATFM_at_labor.state.ny.us>
Date: Mon, 22 Sep 2003 10:44:40 -0800
Message-ID: <F001.005D0B77.20030922104440@fatcity.com>


In my opinion, SAN storage begs the question about whether OFA makes sense anymore. If you can configurte the SAN storage so that all files are striped across all disk, then everything is spread. And if the SAN is mirrored, then just why are we working so hard?

EMC SAN disk has such an incredible uptime, that worrying about losing things like control files are (almost) a thing of the past.

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
Sent: Monday, September 22, 2003 2:05 PM To: Multiple recipients of list ORACLE-L

I read some posts on here with shared storage such as SAN and Network Appliances its no longer necessary to multiplex datafiles on different disks, since the storage array handles that for you.

How do you ensure that control files and redo log files are kept safely apart so that no one disk failure in the shared storage can take them all out?

According to the OFA(well the abbreviated version I have in front of me) 4-5 disks is optimal for multiplexing. Does this no longer apply with shared storage? How do you ensure database available with shared storage? if your not multiplexing datafiles?

I may have read some peoples posts incorrectly. Im just digging into backup and recovery.

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Author: Mercadante, Thomas F
  INET: NDATFM_at_labor.state.ny.us
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