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Paired snapshot volume status definitions, Paired snapshot volume status definitions 64 – HP XP RAID Manager Software User Manual

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64

HP StorageWorks Disk Array XP RAID Manager: User’s Guide

Paired SnapShot volume status definitions

Each pair of SnapShot volumes consists of a primary volume (P-VOL) and
secondary volume (S-VOL). The S-VOL is actually a virtual volume
(V-VOL). Each volume maintains its own pair status.

The supported volume type is OPEN-V only for the P-VOL, and OPEN-0V
for the S-VOL.

The major SnapShot pair statuses are:

• SMPL

• PAIR

• COPY

• RCPY

• PSUS

• PSUE

The P-VOL controls the pair state that is typically reflected in the status of
the S-VOL. The status can be changed when an RM command is issued. A
read or write request from the host is allowed or rejected according to the
status, as shown in the following figure.