Hard Drive Installation and Replacement

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Figure E-2: Array capacity expansion

The unused capacity on the enlarged array can now be used to create an additional logical drive, with a different fault-tolerance setting if necessary.

Alternatively, the unused capacity can be used to increase the size of one of the original logical drives; this process is logical drive capacity extension. Another method for carrying out logical drive capacity extension is to delete an existing logical drive and then to add the freed capacity to another logical drive.

Only ACU supports capacity extension. Also, not all operating systems allow extension to be carried out while the system is online (refer to Chapter 5 for details).

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HP Smart Array 641/642 Controller User Guide