Dell PowerVault ME4 Series Storage System Administrator’s Guide

Linear pools and disk groups

Each time that the system adds a linear disk group, it also creates a corresponding pool for the disk group. Once a linear disk group and pool exists, volumes can be added to the pool. The volumes within a linear pool are allocated in a linear way, such that the disk blocks are sequentially stored on the disk group.

Linear storage maps logical host requests directly to physical storage. In some cases the mapping is one-to-one, while in most cases the mapping is across groups of physical storage devices, or slices of them.