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Chapter 2 About Universal Replicator Operations 2-5
Hitachi Universal Replicator for IBM /OS User’s Guide
L
Co
py
direction
Remote copy
connection
URz volume pair
Host processor
at the primary site
Primar
y
subs
y
stem
(
LDKC
)
Error Reporting
Communications
Host processor
at the secondary site
Stora
g
e s
y
stem
(
LDKC
)
Internal LAN (TCP/IP)
Master journal group
SVP
SVP
Restore journal group
MCU
RCU target port
Storage Navigator computer
Storage Navigator computer
Initiator port
Primary
data
volume
CHT
CHT
RCU tar
g
et
p
ort
Initiator port
RCU
Master
journal
volume
Secondar
y
data
volume
Restore
journal
volume
(
MVS
)
Time stam
p
in
g
function (MVS) Time stamping function
Dis
k
subs
y
stemStora
g
e s
y
stem
Figure 2-2 URz components
Figure 2-3 shows the plural secondary storage systems connection
configuration of URz. By connecting one primary storage system with more
than one secondary storage system, you can create a volume pair that has a
one-to-one relationship for each journal group.