HP StorageWorks XP Remote Web Console Software - Manual (Page 7)

•
Improves operational efficiency by allowing multiple processes to run in parallel with access
to the same information.
•
Allows disk space to be used efficiently through volume snapshots rather than full-copy clones,
which helps maximize disk space.
Differentiation from HP StorageWorks XP Business Copy Software
XP Business Copy differs from XP Snapshot in that it creates physically separate copies of the data;
no portion is shared between primary and secondary volumes.
Table 1 (page 7) highlights the
key differences between the XP Snapshot and XP Business Copy products.
Table 1 XP Snapshot and XP Business Copy Differentiators
XP Business Copy Clone XP Snapshot Virtual Volume
Superior protection because it is a
complete copy
Immediate restore if P-VOL becomes
corrupted
Provides a very quick copy because
it is a virtual volume Features
From minutes to hours, depending on
the size of the P-VOL Instantaneous Time to Create
Same amount as P-VOL Size will vary depending upon the
amount of data changed Disk Space Used
Instantaneous Two-stage restore:
1. V-VOL verify, data not available to
host
2. Copy back from a tape storage or
other, data available
Data Recovery Time After P-VOL is
corrupted
P-VOL = S-VOL
P-VOL Pool for one V-VOL
Size of Physical Volume
P-VOL : S-VOL = 1 : 3 P-VOL : V-VOL = 1 : 64 Pair Configuration
P-VOL can be restored from S-VOL P-VOL can be restored from any V-VOL Restore
Figure 1 Product Differentiators for XP Snapshot and XP Business Copy Software
Differentiation from HP StorageWorks XP Business Copy Software 7