Hitachi TAGMASTORE MK-90RD011-25 - Manual (Page 120)

102 Chapter 2 Overview of CCI Operations
2.9.1.3 ShadowImage
ShadowImage is a mirror configuration within one storage system. Therefore, ShadowImage
can be described a volume of the cascading connection according to two configuration
definition files. In case of cascading connection of ShadowImage only, the specified group is
assigned to the mirror descriptor (MU#) of ShadowImage that describes definitely “0” as MU#
for ShadowImage. Figure 2.48 - Figure 2.50 show ShadowImage cascading configurations and
the pairdisplay information for each configuration.
PVOL
266
S/P
VOL
268
270
272
oradb Oradb1
Oradb2
1
2
0 0
# pairdisplay -g oradb -m cas
Group PairVol(L/R) (Port#,TID,LU-M),Seq#,LDEV#.P/S,Status, Seq#,P-LDEV# M
oradb oradev1(L) (CL1-D , 3, 0-0)30053 266..P-VOL PAIR,30053 268 -
oradb oradev1(R) (CL1-D , 3, 2-0)30053 268..S-VOL PAIR,----- 266 -
oradb1 oradev11(R) (CL1-D , 3, 2-1)30053 268..P-VOL PAIR,30053 270 -
oradb2 oradev21(R) (CL1-D , 3, 2-2)30053 268..P-VOL PAIR,30053 272 -
Figure 2.48 Pairdisplay on HORCMINST0
S/P
VOL
268
PVOL
266
270
272
Oradb
Oradb1
Oradb2
1
2
0 0
# pairdisplay -g oradb -m cas
Group PairVol(L/R) (Port#,TID,LU-M),Seq#,LDEV#.P/S,Status, Seq#,P-LDEV# M
oradb oradev1(L) (CL1-D , 3, 2-0)30053 268..S-VOL PAIR,----- 266 -
oradb1 oradev11(L) (CL1-D , 3, 2-1)30053 268..P-VOL PAIR,30053 270 -
oradb2 oradev21(L) (CL1-D , 3, 2-2)30053 268..P-VOL PAIR,30053 272 -
oradb oradev1(R) (CL1-D , 3, 0-0)30053 266..P-VOL PAIR,30053 268 -
Figure 2.49 Pairdisplay on HORCMINST1