Snapshot; Figure 5.3 Snapshot - Fujitsu ETERNUS DX500 S3 Overview

Chapter 5 NAS Functions
5.5

Snapshot

5.5 Snapshot
Snapshot is a function that automatically backs up volume data at a certain point. Unlike usual backup cop-
ies, this function only copies differential data from the source volume data. Therefore, the disk space neces-
sary for backup is reduced.
Acquiring snapshots of the NAS user volume enables file restoration from a snapshot even if a file is deleted
by mistake. Data can be restored from a client.

Figure 5.3 Snapshot

Directory
NAS user volume
File
File
Perform differential copy
for each volume when
snapshot is acquired.
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Disk storage system Overview
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ETERNUS DX
Snap Data Pool (SDP)
Acquire
Snapshot destination
67
Expansion area
Supply
RAID group
: Snapshot
P3AM-7702-14ENZ0