Hitachi TAGMASTORE MK-90RD011-25 - Manual (Page 199)

Hitachi Command Control Interface (CCI) User and Reference Guide 181
Pair re-
synchronization
command
Server A Server B
Primary
volume
(Secondary
volume)
Secondary
volume
(Primary
volume)
Paired logical volumes
Differential/entire data copy
Figure 4.5 Pair Resynchronization
P-VOL S-VOL
: Write Data
COPY
Read/Write Read*
P-VOL S-VOL
: Write Data
RCPY
Read Read*
Normal Resync Copy
Restore Resync Copy
(ShadowImage only)
Figure 4.6 Normal Resync and ShadowImage Restore Resync