Optimization Of Volume Configurations - Fujitsu ETERNUS DX500 S3 Overview

3. Basic Functions

Optimization of Volume Configurations

Optimization of Volume Configurations
This section explains the functions that optimize volume configurations according to the customer's environ-
ment.
The ETERNUS DX allows for the expansion of volumes and RAID group capacities, migration among RAID groups,
and changing of RAID levels according to changes in the operation load and performance conditions without
interruption to data.
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Expansion of Volume Capacity
Volume capacity expansion is possible by using RAID Migration to move a volume to a RAID group that has
enough free space.
Volume capacity expansion is also possible by using LUN Concatenation to add areas of free space to an existing
volume.
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Expansion of RAID Group Capacity
The existing RAID group capacity can be expanded by adding drives to the RAID group with Logical Device Ex-
pansion.
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Migration among RAID Groups
Migration of a volume to another RAID group is possible by using RAID Migration.
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Changing the RAID Level
Changing of the RAID level is possible by using RAID Migration to migrate to a RAID group with a different RAID
level.
Logical Device Expansion can also be used to change the RAID level. Drives can be added while the RAID level is
being changed.
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Striping for Multiple RAID Groups
Server I/O access performance can be improved by distributing the allocation of a volume across multiple RAID
groups with Wide Striping.
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FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Overview
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