Logical Volume Manager (LVM)

The Logical Volume Manager is a management function that groups the save areas in multiple drives and partitions and manages these areas as one logical drive. Adding drives and expanding logical volumes can be performed without stopping the system. This function can be used on UNIX OSs (includes Linux).

LVM has a snapshot function. This function obtains any logical volume data as a snapshot and saves the snapshot as a different logical volume.

To use LUNs in the ETERNUS DX to configure an LVM, the LVM can be configured by registering LUNs in the ETERNUS DX as physical volumes.

Figure: Logical Volume Manager (LVM)