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RAID1 vs RAID5
Hi experts,
Which one should I suggest between RAID1 and RAID5 to my manager for 24*7 production database box? And why?
Regards
sumit
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What is the nature of your application? OLTP or DSS ? Based on this you have to decide.
HTH.
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Hi Raj,
I will appreciate, if you explain me both the cases.
Thanks
sumit
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http://www.dbasupport.com/forums/sho...highlight=RAID
For high writes use RAID 0+1
For high reads use RAID 5
HTH
Last edited by adewri; 03-17-2003 at 02:40 AM.
Amar
"There is a difference between knowing the path and walking the path."
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Hi as ggnanaraj mentioned what r u looking for
More reliability or better performance.
better performance ----Raid1
Better Reliability-----Raid5
But u need a both.so i suggest u use raid 5 with cache controllers to enhance performance(If your budget permits).
Cheers
Murali
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Originally posted by sumit
Which one should I suggest between RAID1 and RAID5 to my manager for 24*7 production database box? And why?
Check this link for solid information to place before your boss...
http://www.quest.com/whitepapers/Raid1.pdf
Cheers.
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It depends on your application. Software based RAID 5 is worthless for high intensity write applications. Hardware RAID 1+0 or 0+1 is great for reads, writes, and redundancy, but is expensive. Software based RAID 1 (mirroring) is OK for reads, writes, and redundancy, but you only have one spindle working for you during writes. Hardware based RAID 5 is OK for high intensity read applications but still sucks for writes. In addition, the performance you achieve with a RAID unit will depend on how many controllers you have, how many SCSI busses are available, what your transfer speed is, and how much cache you have available.
For more information on RAID, go to:
http://www.bitpipe.com/data/detail?i...S&x=1704389170
http://www.bitpipe.com/data/detail?i...S&x=1704389170
For more information on RAID specific to Oracle, go to:
http://metalink.oracle.com/metalink/...T&p_id=30286.1
http://metalink.oracle.com/metalink/...T&p_id=38281.1
Jeff Hunter
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