RE: Does ASM's EXTERNAL REDUNDANCY concatenate?
Date: Mon, 30 Jun 2008 15:09:25 -0400
Oracle will stripe (1MB) across your RAID (creating a plaid) which is okay as long as the stripes of your raid are a multiple of 1MB (e.g. 256KB stripes). You could create you backend RAID and present with 6 (x2GB) LUNs carved from your RAID config as your diskgroups.
Just some thoughts.
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Martin Klier Sent: Monday, June 30, 2008 2:54 AM
Subject: Does ASM's EXTERNAL REDUNDANCY concatenate?
does ASM's EXTERNAL REDUNDANCY feature stripe the data or does it concatenate them?
Oracle EE x86_64 on Linux, Version 10.2.0.4
2x Adaptec 5085, each connected to an own SAS JBOD with 16x 1TB HDD, one of them is global hot spare disk
I want a diskgroup with 12TB in size, 6TB on each JBOD.
Another sad thing: Due to Metalink note 6453944.8, I can't create ASM diskgroups with disk members larger than 2TB due to corruption risks and ORA-15099 (which is really nasty!).
Any ideas to the question or to my sceanrio in general are greatly appreciated!
Thanks in advance
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http://www.freelists.org/webpage/oracle-l Received on Mon Jun 30 2008 - 14:09:25 CDT