HP StorageWorks XP Remote Web Console Software - Manual (Page 25)

3 Preparing for XP Snapshot
Operations
This chapter describes the requirements for using XP Snapshot, the installation procedure for XP Snapshot,
and calculation of the number of pairs that XP Snapshot can create. Please read this chapter before
you start the operation of XP Snapshot.
System Requirements
XP Snapshot operations involve the storage system containing the primary and secondary volumes and
the licensed XP Snapshot and Business Copy feature enabled on Remote Web Console. The system
requirements for XP Snapshot are as follows.
Volume Requirements
XP Snapshot uses P-VOLs, S-VOLs, and pool-VOLs. The requirements (such as emulation type or path
definition) for the volumes used for XP Snapshot are described in this section.
Table 13 Requirements of the P-VOL of XP Snapshot
Item Requirement
Volume type
Logical volume (LDEV)
LUSE volume can be specified.
Note: A LUSE P-VOL must be paired with an S-VOL of the same size and the same
structure. For example, if a LUSE P-VOL is created by combining volumes of 1 GB
and 2 GB and 3 GB in this order, you must specify a LUSE volume which has
exactly the same size and the same combination order as the S-VOL.
You cannot specify the following volumes as XP Snapshot P-VOLs.
• Volumes used as pool-VOLs
• Volumes used as S-VOLs of XP Snapshot pairs
Emulation type OPEN-V
Maximum number
16,384
For details about the maximum number of XP Snapshot pairs that can be created,
see “ Calculating Maximum Number of Pairs ” on page 27.
Path definition Required
Maximum capacity 2 TB
XP24000 Snapshot User's Guide 25