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RAID 10 with different speed drives

post #1 of 5
Thread Starter 
Just wondering, when configuring RAID 10, can you run 2 x 7200RPM drives for the "main" striping component (the raid 0), and 2 x 5400RPM drives for the mirror component (the raid 1)? Can you even choose what drives do what function?

And if so, will this yield better performance than running 4 x 5400RPM drives?
post #2 of 5
Hmm...I don't know. i've never tried it, but you should be able to read faster from the 7200k drives, but the writes would be all done at the same speed across all the drives.

but you don't ussually read from the mirrored harddrives as far as I know. So read performance should be faster.
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post #3 of 5
Not sure if you can pick and choose in RAID 10 where your drives go, but I do know that no matter what your 7.2K drives will be limited to the 5.4K speed. The faster drives will be forced to read/write at the same rate as the slower drives.
post #4 of 5
Quote:
Originally Posted by hirolla888;15381537 
Just wondering, when configuring RAID 10, can you run 2 x 7200RPM drives for the "main" striping component (the raid 0), and 2 x 5400RPM drives for the mirror component (the raid 1)? Can you even choose what drives do what function?

And if so, will this yield better performance than running 4 x 5400RPM drives?

The array in its entirety will be limited by the slowest I/O.

If if you could manually set up what you want (which is possible through two different RAID controllers), your RAID0 will always still have to wait until the RAID1 I/O completes.
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post #5 of 5
Thread Starter 
Alright so basically no performance gains running the 2 x 7200RPM drives.

Thanks guys!
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