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тАО01-28-2007 05:10 AM
тАО01-28-2007 05:10 AM
Mixing 10k and 15k disks
I have a RAID5 array currently consisting of (4) 146GB 10k rpm U320 hard drives, living on Smart Array 6i controller inside a Proliant DL380G4 server. I'm planning to soon move the array to MSA1500cs/MSA30 system and add 8 more HDDs. Is it safe to add 15k rpm drives to existing array of 10k rpm drives and is there any performance benefit (at least theoretically)? My own thinking says it should be reasonable move, but what do the experts think?
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тАО01-28-2007 05:20 AM
тАО01-28-2007 05:20 AM
Re: Mixing 10k and 15k disks
8 more HDD into the same RAID5 array, giving 12 disks in total ?
Sure it can be done, but the array will only work at the speed of the 10K HDD's. When mixing, the slowest/smallest member's characteristics is always inherited to all members in the array.
Hope this helps,
Jeff
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тАО01-28-2007 08:44 AM
тАО01-28-2007 08:44 AM
Re: Mixing 10k and 15k disks
If that were true, mixed array would still be a little bit faster? Just a little bit? Pleease? ;)
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тАО01-28-2007 07:00 PM
тАО01-28-2007 07:00 PM
Re: Mixing 10k and 15k disks
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тАО01-28-2007 09:09 PM
тАО01-28-2007 09:09 PM
Re: Mixing 10k and 15k disks
Whene we upgrades disks in the old autoraid, we alsow hat to change the fans...
please chack if you fans can take on the head...
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тАО01-28-2007 10:35 PM
тАО01-28-2007 10:35 PM
Re: Mixing 10k and 15k disks
http://h18004.www1.hp.com/products/servers/proliantstorage/drives-enclosures/hotplug-ultra3/questionsanswers.html#3
Was your experience with HP drives?