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January 21st, 2011 05:00
Raid Config Issue
You have to rebuild a server which had 2 sas 146 gb disks.
One of them breaks down and you have to act. There is another disk available, different size and different speed. Will you use that one in your raid config and risk performance issue? Or go for one disk and take a redundancy risk?
Is misperformance of a config with two different disk a certainty or a chance?
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pcmeiners
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January 21st, 2011 07:00
For you to use another disk, the disk must be at least as large (initialized(low formatted)) as the original disk model, there are instances where a different make/model are incompatible, even using a replacement disk of the same make/model with different firmware or slightly less formatted size will not allow a disk to be used or creates problems. If the speed of the drive is lower, the array drops to the lower speed. Basically you should replace a defunct disk with the exact same make/model/firmware or a tested/compatible disk.
JohannesB
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January 21st, 2011 07:00
I understand and am aware of the basically part but imagine there is no alternative, what do you decide? one or two?