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HP DL580 G4 Which Disk to Assign to Raid 1 and Raid 5 DL580 G4 8 Disk

Posted on 2014-03-18
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Last Modified: 2014-03-26
Which disk should I select on a 8 disk server for RAID 1 and again for RAID 5?  Should RAID 1 disk be on different channels?  Any other info would be great?
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Question by:Conrad_Bel
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Expert Comment

by:Seth Simmons
ID: 39938711
i usually go in order
first 2 disks for raid 1 and so on for raid 5
your next 3 (at a minimum) will make your raid 5; add more for more space
if i were building that configuration i would put 5 disks in the raid 5 and leave that last drive as a global hot spare

all the drives in each container have to be the same speed and size
if i had 2 300gb drives i would put in the first 2 slots for the raid 1 array and if i had the other 6 as 900gb drives then build as raid 5 then the last one a hot spare that can accommodate a failure in either array

unless there is some serious i/o need that would benefit from having 2 controllers, usually it is just fine with multiple raid arrays on the same controller
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Expert Comment

by:Gerald Connolly
ID: 39939691
Or you might want to consider including the "spare" in a RAID-6 RAIDset
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Author Comment

by:Conrad_Bel
ID: 39939821
I considered RAID 6, but just trying to keep everything consistant.  All the other phyical servers are set to RAID 1 & RAID 5.  But none are consistant.
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Accepted Solution

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Conrad_Bel earned 0 total points
ID: 39946714
I chose raid 1 and raid 5.  Chose to put disk on two different channels.
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Author Closing Comment

by:Conrad_Bel
ID: 39955468
No better solution.  Did further research.
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