TCz Synchronous, UR primary site A | URz secondary site |
primary host | secondary host |
journal restore
secondary
Failure | master | restore |
JNL VOL | JNL VOL | |
primary |
| secondary |
subsystem |
| subsystem |
| TCz Synchronous | journal copy |
| primary site B | |
| (former secondary site) |
|
Data flow
primary host (former secondary host)
Write
journal obtain
primary data VOL
(former
master
JNL VOL
primary subsystem
(former secondary subsystem)
URz pair for delta resync operation 
Journal data flow
Figure 2-8 Delta Resync Setting in 3DC Multi-target Configuration (After Failure Occurred)
Chapter 2 About Universal Replicator Operations |
