Example — Restarting a System

Using the four-system complex shown in Figure 1, assume that SYS4 has been quiesced but is now ready to rejoin the ring. An operator on any active system could restart SYS4, but assume that the operator on SYS2 is to handle the restart.

On SYS2, the operator issues VARY GRS(SYS4),RESTART.

On SYS2 and SYS4, the following message appears to indicate that the process of restarting SYS4 has begun:

ISG011I SYSTEM SYS4 - RESTARTING GLOBAL RESOURCE SERIALIZATION

On all active systems, the following message appears to indicate that SYS4 is now part of the active global resource serialization ring:

ISG013I SYSTEM SYS4 - RESTARTED GLOBAL RESOURCE SERIALIZATION

If the operator on SYS4 issued the restart command, global resource serialization would pass the command to an active system for processing. If the system selected was SYS2, the following message would appear on SYS4:

ISG012I RESTART REQUEST PASSED TO SYSTEM SYS2