Hitachi TAGMASTORE MK-90RD011-25 - Manual (Page 49)

Hitachi Command Control Interface (CCI) User and Reference Guide 31
2.5 Applications of Hitachi TrueCopy/ShadowImage Commands
This section provides examples of tasks which can be performed using Hitachi TrueCopy
and/or ShadowImage commands (see Figure 2.12 - Figure 2.17):
„
Back up secondary volume in paired status (TrueCopy or ShadowImage)
„
Restore secondary volume to primary volume in split status (TrueCopy or ShadowImage)
„
Swapping paired volume for duplex operation (TrueCopy only)
„
Restoring secondary volume for duplex operation (TrueCopy only)
Secondary
COPY
Secondary
PSUS
Secondary
PSUS
Primary
PAIR
Secondary
PAIR
R/W
Primary
PSUS
W (Database flushing)
e
Pair splitting (Read)
d
Event waiting (PAIR)
Primary
COPY
g
Pair resynchronization
Primary
PSUS
Read R/W
d
Event waiting (PSUS)
c
Backup request c
Database freezing
f
Backup executing
f
Database unfreezing
h
Backup completion
R/W
OLTP (DB) server Backup server
e
Database mount -r
g
Database unmount
Figure 2.13 Backing Up S-VOL in Paired Status Using Hitachi TrueCopy