Hitachi G200 - How Pair Status Changes

For more information, see Pair status definitions on page 7-4.
To monitor license capacity
1. See the Summary area in the Replication window.
How pair status changes
The primary system changes and maintains the status of the P-VOL and is
responsible for keeping the P-VOL and its S-VOL synchronized. The secondary
system maintains the status of the S-VOL.
• The primary system can change the status of the P-VOL and S-VOL.
• The secondary system can change the status of the S-VOL but not the P-
VOL. When an operation is performed from the secondary system, the
primary system detects a status change in the S-VOL and then changes
the P-VOL status accordingly.
• The status indicates the state of the volume or pair:
¢
When a pair is started, the secondary system changes the status of
the P-VOL and S-VOL to COPY. When the initial copy operation is
complete, the primary system changes the status of both volumes to
PAIR.
¢
When you split a pair, the system changes the status of the P-VOL
and S-VOL to PSUS.
Monitoring and maintaining the TC system
7-3
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models