Figure 22 Cascaded SRDF/Star
R1
R2
SRDF/S
SRDF/A
SRDF/A
recovery links
Site B
Active
Inactive
Site A
Site C
R21
Cascaded SRDF/Star with R22 devices
You can use R22 devices to pre-configure the SRDF pairs required to incrementally
establish an SRDF/A session between Site A and Site C in case Site B fails.
The following image shows cascaded R22 devices in a cascaded SRDF solution.
Figure 23
R22 devices in cascaded SRDF/Star
R11
R22
R21
SRDF/S
SRDF/A
SRDF/A
recovery links
Site B
Active
Inactive
Site A
Site C
Remote replication solutions
112 Product Guide VMAX 100K, VMAX 200K, VMAX 400K with HYPERMAX OS
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