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 82 Logical Volume Manager (LVM)
Physical group
RAID group #0 RAID group #1 RAID group #2
Physical volume Physical volume Physical volume
Business server
Logical volume
Volume group
LUN LUN LUN
E
TERNUS DX
LVM
3. SAN Functions
Server Linkage Functions
145
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems
Design Guide (Basic)
Copyright 2023 Fujitsu Limited
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