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тАО06-16-2008 02:27 AM
тАО06-16-2008 02:27 AM
Which is more efficient?
MSA1000 with 42x 300 GB drives with 1 array containing 6x 2TB logical drives (any RAID level)
OR
MSA1000 with 42x 300 GB drives with 6 arrays each containing 7x disks (=2TB)
?
answers on a postcard to.....
MSA1000 with 42x 300 GB drives with 1 array containing 6x 2TB logical drives (any RAID level)
OR
MSA1000 with 42x 300 GB drives with 6 arrays each containing 7x disks (=2TB)
?
answers on a postcard to.....
Solved! Go to Solution.
3 REPLIES 3
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тАО06-30-2008 05:19 AM
тАО06-30-2008 05:19 AM
Re: Array Efficiency
Anyone know how i can find an answer to the above?
Thx in advance
Thx in advance
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тАО07-10-2008 08:59 PM
тАО07-10-2008 08:59 PM
Solution
I recommend 6 RAID five array with one global hot spare. This provides 6 individual logical units, when a drive fails and is replaced, only six drives have to be rebuilt instead of all 42. Also, in case of drive failure, one hot spare can service any of the 6 arrays. The MAS100 has four SCSI buses, bus A is slots 1 to 7 of shelf one, bus B is slots 8 to 14 of shelf one, bus C is 14 slots of shelf 2 and bus D is 14 slots of shelf 3. For performance, the drives in each of 6 arrays should be spread across the four buses. The following shows drive location for 6 arrays, 1 through 6, and H for the hot spare.
Shelf One Bus A and B
1234567 1234567
Shelf Two
11223344556677
Shelf Three
1122334455667H
Regards,
Tim
Shelf One Bus A and B
1234567 1234567
Shelf Two
11223344556677
Shelf Three
1122334455667H
Regards,
Tim
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тАО07-14-2008 12:34 AM
тАО07-14-2008 12:34 AM
Re: Array Efficiency
Thanks Tim,
I never knew about the 4 buses and what you have said makes perfect sense. I've been searching for this for ages!!
GoldDust. HP should make this info available to everyone buying an MSA
I never knew about the 4 buses and what you have said makes perfect sense. I've been searching for this for ages!!
GoldDust. HP should make this info available to everyone buying an MSA
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