Fujitsu ETERNUS DX80 VFY:DX800XF030IN Folheto

Copyright 2009 FUJITSU LIMITED

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Snapshots and Clones

Description

Virtual copy

Real copy

Positioning

For space-efficient 

temporary copies such as 

a consistent source for 

backup to tape

For longer-term copies such 

as database clone, backup 

to and restore from disk

ETERNUS DX60/DX80 
feature

SnapOPC+

OPC

QuickOPC

EC

Space requirement

Only for changed data

Same space as source

Performance impact on 
source LUN during creation

None

OPC: after split, EC: before

Performance impact on 
source LUN after creation

if source changes or if 

many reads from 

snapshot

None

Resilient against failure of 
original LUN

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