HP StorageWorks XP Remote Web Console Software - Manual (Page 12)

HP StorageWorks XP Snapshot
XP Snapshot is a program product similar to Business Copy. It enables you to maintain and copy all data
on the storage system. XP Snapshot is used for data for open systems such as UNIX and PC servers.
A pair created by XP Snapshot is called an XP Snapshot pair in this document. Note that the use of
XP Snapshot involves Business Copy.
XP Snapshot and Business Copy are similar because both program products create pairs. However, the
S-VOLs of XP Snapshot pairs do not consume the capacity of the storage system because the S-VOLs are
virtual volumes. Therefore, XP Snapshot reduces the capacity used by the storage system as a whole.
In addition, since XP Snapshot copies only the updated part of the P-VOL, XP Snapshot pairs will take
shorter time compared to the copy process of Business Copy pairs.
We encourage the use of XP Snapshot to copy and manage the data in a short time with a reduced cost.
However, since only some of the data in P-VOLs is copied by XP Snapshot, the data stored in P-VOLs is
not guaranteed in some cases. Therefore, we encourage you to consider the use of Business Copy when
data integrity is more important than the speed of copy process or the capacity of the storage system.
For details about XP Snapshot, see the HP StorageWorks XP24000 Snapshot User’s Guide.
Continuous Access
Continuous Access enables open-system users to perform synchronous and/or asynchronous remote copy
operations between storage systems. The user can create, split, and resynchronize LU pairs. Once
established, Continuous Access operations continue unattended and provide continuous, real-time data
backup. Remote copy operations are nondisruptive and allow the primary Continuous Access volumes to
remain online to all hosts for both read and write I/O operations.
Continuous Access supports Fibre Channel interface connections between the main and remote storage
systems. For Fibre Channel connection, Continuous Access operations can be performed across distances
of up to 30 km (18.6 miles) using single-mode longwave optical fibre cables in a switch configuration.
Long-distance solutions are provided, based on user requirements and workload characteristics, using
approved channel extenders and communication lines. For further information on Continuous Access,
see HP StorageWorks XP24000 Continuous Access Software User and Reference Guide, or contact
your HP service representative.
Business Copy and VERITAS NetBackup DataCenter
NetBackup DataCenter may be integrated with Business Copy to provide:
• Automated point-in-time copy capabilities
• Transparent, nondisruptive backups
• Centralized management of backups
• Multi-tiered architecture for managing growing backup requirements
Note: For further information on Business Copy and VERITAS NetBackup DataCenter, contact your HP
service representative.
12 Overview of HP StorageWorks XP Business Copy Software