Functions; Functions 13; Rebuild/Copyback - Fujitsu Eternus2000 Manual

1.3

Functions

This section describes the main ETERNUS2000 functions.
1.3.1

Rebuild/Copyback

When a disk drive fails and the RAID group redundancy has been broken, Rebuild/Copyback restores the
disk drive status back to normal status as a background process.
RAID5 (No Redundancy)
RAID5 (Redundant)
RAID5 (Redundant)
RAID5 (Redundant)
Figure 1.10 Rebuild/Copyback function
P3AM-2512-03EN ETERNUS2000 disk storage system User Guide
Rebuild
Hot Spare Disk
Failure
Replaces the failed disk drive with the new disk drive.
Copyback
Hot Spare Disk
Copyright 2009 FUJITSU LIMITED
Creates data from the other disk drive than
failed disk drive and writes the data into
the hot spare disk.
After replaceing completed,
copies the data from the hot spare disk
to new disk drive.
Chapter 1 Overview
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