Using raid 5 on clarion san

Last Post 29 Nov 2008 04:33 AM by Lee. 2 Replies.
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trans53
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12 Jul 2008 02:35 PM
Hi all,

What do you think of using raid 5 for database data files and raid 10 for log files on clarion san with a huge cache?

I was told that not using raid 5 is an "old school" and there is no problem of implementing this on san system at all.

Any prons and cons of using raid 5 on san systems?

Just want to understand more.

Thanks























trans53
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12 Jul 2008 06:51 PM
Excellent, thank you as always.
Lee
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29 Nov 2008 04:33 AM
I'd first look at the entire setup of the SAN and make sure that it's done according to best-practice. Most network/SAN guys simply take a large terrabyte sized SAN and set aside a large chunk and then format the remaining space and then partition to the given applications. Bad idea. I/Os of one application fight with all others; I would make sure that your SQL Servers have their own partitions carved out, shared with no other executables, and that asynch are with asynch, synchronous with synchronous reads/writes.

Good luck!
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