Hot Spares; Figure 4.11 Drive Combination 3; Figure 4.12 Hot Spares - Fujitsu ETERNUS DX80 S2 Overview

Chapter 4 System Configuration

4.5 Hot Spares

Example 3: Paired drives are installed in three different drive enclosures

Figure 4.11 Drive combination 3

A
Mirroring
C
B'
4.5 Hot Spares
Hot spares are used as spare drives for when drives in a RAID group fail, or when drives are in error status.

Figure 4.12 Hot spares

B
A'
Mirroring
C'
Failure
RAID group
ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
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DE#01
DE#02
Hot spare
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