Assign Hot Spare - Fujitsu Eternus DX60 S2 User Manual

Chapter 5 Setup
5.1 Basic Setup
7
7-1
5.1.6

Assign Hot Spare

Register hot spares for use in the event of disk failure.
IMPORTANT
FUJITSU Storage ETERNUS DX60 S2 Disk storage system User's Guide -Installation-
Finish Configuration Wizard
Click the [OK] button.
Configuration Wizard finishes.
• Check the factory settings and register a hot spare as required.
• System disks cannot be registered as hot spares.
The following two types of hot spare are available:
• Global Hot Spare
This is available for any RAID group.
• Dedicated Hot Spare
This is only available to one specified RAID group.
For a RAID group that contains important data, assign dedicated hot
spares, in order to preferentially improve the RAID group's access to hot
spares.
Do
CAUTION
• Registering hot spares is recommended.
If a free hot spare is available, when one of the RAID group disks has
a problem, data from this disk is automatically replicated into the hot
spare.
• A smaller capacity disk is not usable as a hot spare for a larger
capacity data disk.
• When registering Global Hot Spares, the capacity of at least one hot
spare should be the same as that of the largest capacity disk in the
ETERNUS DX Disk storage system.
If a mixture of SAS disks and Nearline SAS disks installed in the
ETERNUS DX Disk storage system, separate hot spares will be
required for each type of disk. The capacity of each type of hot spare
should be the same as that of the largest capacity same-type disk.
• When registering dedicated hot spares, the capacity of each hot
spare should be the same as that of the capacity of the disks in the
RAID group.
Copyright 2014 FUJITSU LIMITED
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End of procedure
P3AM-5502-05ENZ0