HP StorageWorks XP Remote Web Console Software - Manual (Page 15)

2 Snapshot XP functions
Snapshot XP creates pairs consisting of a P-VOL and S-VOL. When creating a pair, Snapshot XP 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 Snapshot XP uses first, and then
describes Snapshot XP functions.
Volumes Snapshot XP uses
Snapshot XP uses the P-VOL, S-VOL, and pool-VOL. This section describes the requirements (such as
emulation type or path definition) for the volumes Snapshot XP uses.
Snapshot XP primary volumes
Table 2 Requirements for Snapshot XP P-VOLs
Item Requirement
Volume type 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 Snapshot XP P-VOLs:
• Volumes used as pool-VOLs
• Volumes used as a Snapshot XP pair's S-VOL
• Volumes used by a Flex Copy XP pair
• NAS volumes
Emulation type OPEN-V
Maximum number 8,191
For more information about the maximum number of Snapshot XP pairs that can be
created, see Calculating the number of Snapshot XP pairs you can create .
Path definition Required
Maximum capacity 2 TB
HP StorageWorks Snapshot XP user guide 15