Redundant Copy; Figure 1.11 Redundant Copy Function - Fujitsu Eternus DX60 User Manual

Chapter 1 Overview
> 1.3 Functions
1.3.2

Redundant Copy

The Redundant Copy function creates data in the disk, in which the Disk Patrol function decides
that preventative maintenance is required, from the other disks to the hot spare. With this func-
tion, you can restore the data while maintaining redundancy.
RAID5 (Redundancy)
RAID5 (Redundancy)

Figure 1.11 Redundant Copy Function

P3AM-3042-06ENZ0 ETERNUS DX60/DX80/DX90 Disk storage system User Guide
Sign of
failure
Disconnected
38
Creates data from the disks other than
the maintenance target disk, and
writes data into the hot spare.
Hot Spare
Disconnects the maintenance target disk
and installs the hot spare.
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