Fujitsu Eternus DX500 S3 - Snapshot; Figure 40 Snapshot

Snapshot
Snapshot is a function that automatically backs up volume data at a certain point. Unlike usual backup copies,
this function only copies differential data from the source volume data. Therefore, the disk space necessary for
backup is reduced.
Acquiring snapshots of the NAS user volume enables file restore from a snapshot even if a file is deleted by mis-
take. Data can be restored from a client.
Figure 40 Snapshot
Snapshot destination
RAID gr
oup
NAS user volume
File
File
Expansion area
Directory
: Snapshot
ETERNUS DX
Snap Data Pool (SDP)
Supply
Acquire
Perform differential copy
for each volume when
snapshot is acquired.
5. NAS Functions
Snapshot
68
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems
Overview
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