Logical Volume Manager (LVM)
The Logical Volume Manager is a management function that groups the save areas in multiple drives and parti-
tions and manages these areas as one logical drive. Adding drives and expanding logical volumes can be per-
formed 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 snap-
shot 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 85 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
ETERNUS DX
LVM
3. SAN Functions
Server Linkage Functions
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FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
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