Hitachi TAGMASTORE MK-90RD011-25 User Manual
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Hitachi Command Control Interface (CCI) User and Reference Guide
33
OLTP (DB) server
DSS server
Primary
PSUS
Secondary
PSUS
R/W
R/W
SMPL
SMPL
R/W
c
Pair splitting
(Simplex)
e
Pair generation
(Remote)
Secondary
COPY
Primary
COPY
R/W
R/W
d
unmount
Secondary
PSUS
Primary
PSUS
W (Database flushing)
R
h
Event waiting (PSUS)
g
Restoration request
c
Database freezing
d
Pair splitting (Read)
e
Database unfreezing
i
mount -r
Secondary
PAIR
Primary
PAIR
R/W
f
Event waiting (PAIR)
Figure 2.15 Restoring S-VOL to P-VOL in Split Status Using Hitachi TrueCopy