HP StorageWorks XP Remote Web Console Software - Manual (Page 11)

2 XP Snapshot functions
XP Snapshot creates pairs consisting of a P-VOL and S-VOL. When creating a pair, XP Snapshot uses
a V-VOL as the pair's S-VOL. In addition, you can manage the P-VOL's snapshot data by copying the
data to an area called the pool. This chapter describes the volumes XP Snapshot uses first, and then
describes XP Snapshot functions.
Volumes XP Snapshot uses
XP Snapshot uses the P-VOL, S-VOL, and pool-VOL. This section describes the requirements (such as
emulation type or path definition) for the volumes XP Snapshot uses.
XP Snapshot primary volumes
Table 1 Requirements for XP Snapshot P-VOLs
Requirement Item
Logical volume (LDEV)
LUSE volume can be specified.
NOTE:
A LUSE P-VOL must be paired with an S-VOL that has the same size and structure.
For example, if a LUSE P-VOL is created by combining volumes that have 1 GB,
2 GB, and 3 GB in that order, you must specify a LUSE volume that has exactly
the same size and 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 a XP Snapshot pair's S-VOL
• Volumes used by a Flex Copy XP pair
• NAS volumes
Volume type
OPEN-V Emulation type
8,191
For more information about the maximum number of XP Snapshot pairs that can be
created, see “
Calculating the number of Snapshot XP pairs you can create ” on page 20.
Maximum number
Required Path definition
2 TB Maximum capacity
XP Snapshot User Guide 11