Software Manual

C.39
Synchronous Long Distance Remote Copy Disaster Recovery Example
InForm OS Version 2.3.1 Remote Copy User’s Guide
server to the asynchronous backup server. See Asynchronous Backup Server Assumes Role of
Primary Server on page C.59.
■ The primary server goes down and the asynchronous periodic backup server assumes the
role of the primary server with no data transferred from the synchronous backup server.
See Asynchronous Backup Server Assumes Role of Primary Server - No Data Transfer from
the Synchronous Backup Server on page C.80
The following diagram displays the general Synchronous Long Distance Remote Copy setup on
which the disaster recovery examples in the proceeding sections are based:
Figure C-7. Synchronous Long Distance Remote Copy Server Setup
Prior to the failure of InServA, issuing showrcopy on the Synchronous Long Distance Remote
Copy systems InServA, InServB, and InServC appears as follows:
InServA InServB
InServC
(primary)
(backup)
(backup)
Synchronous
Asynchronous
Periodic