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Chapter 4. Storage pools 177

This configuration combines two drive classes, belonging to two different tiers of storage

(Nearline and Enterprise). This is the default option and takes advantage of the Easy Tier

functionality. However, this can be adjusted by setting the number of drives of different

classes to zero, as shown in Figure 4-47.

Figure 4-47 Quick configuration wizard with a zeroed storage class

If you are adding storage to a pool with storage already assigned, the existing storage is also

taken into consideration, with some properties being inherited from existing arrays for a given

drive class. Drive classes incompatible with the classes already in the pool are disabled as

well.

Note: If any drive class is not compatible with the drives being assigned, that drive class

cannot be selected.

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