Software Manual

38 ShadowImage for the XP128/XP1024/XP10000/XP12000
• Use TC390 to provide remote backup copies of SI390 S-VOLs.
Figure 10 SI390 and TC390: shared S-VOL/M-VOL
The configuration shown in the following figure is an example of a volume that is functioning as both an
SI390 S-VOL and a TC390 R-VOL. With this configuration, you can use SI390 to provide additional remote
copies of TC390 M-VOLs.
Figure 11 SI390 and TC390: shared S-VOL/R-VOL
The configuration shown in the following figure is an example of a volume that is functioning as both a
TC390 M-VOL and an SI390 S-VOL, while the R-VOL of the same TC390 pair is also functioning as the
S-VOL of another SI390 pair. With this configuration, you can:
• Use SI390 to provide on-site backup copies of TC390 M-VOLs and R-VOLs.
• Use TC390 to provide remote backup of SI390 S-VOLs.
Figure 12 SI390 and TC390: shared S-VOL/M-VOL and S-VOL/R-VOL
The configuration shown in the following figure is an example of a volume functioning as both an SI390
T-VOL and a TC390 M-VOL.