HP 3PAR Remote Copy Software - Manual (Page 30)

2.14 Remote Copy Configuration
Remote Copy User’s Guide InForm OS Version 2.3.1
Figure 2-7. Synchronous Long Distance Remote Copy - Primary Server Failure
Upon restoration of InServ1:
■ Data is transferred from InServ2 to InServ1, and InServ1 is restored to the primary server.
■ InServ2 and InServ3 are restored as backup servers.
■ Synchronous mode Remote Copy is restored between InServ1 and InServ2.
NOTE: Either backup server can be set up to assume the role of the primary server
in the event of failover. See Chapter 3, Remote Copy Setup for information.
InServ1
(primary server)
InServ2
(backup server)
InServ3
(backup server)
Synchronous
Mode
Prior to InServ1 Failure 1
2 InServ1 Failure
InServ1
(failed)
InServ2
(primary server)
InServ3
(backup server)
Primary
Volume
Group A
Secondary
Volume
Group A
1
Secondary
Volume
Group A
2
Primary
Volume
Group A
Secondary
Volume
Group A
Asynchronous
Mode Periodic
Asynchronous
Mode Periodic
(standby link)