Avaya S8700 - Page 65

Initialization
Issue 1 May 2002
3-3555-233-143
Standby Server’s Initialization
These steps are executed on the standby server:
1. Avaya MultiVantage — On the standby server, many processes are
frozen, so that the Standby DupMgr can shadow into them without
interfering with those writes. However, some shadowed and unshadowed
processes need to run on the standby. These processes are known as the
“run-on-standby” processes (because they have the RUN_STBY attribute).
The PCD process runs on the standby to communicate with port networks.
The rest of these processes support the PCD or create processes that
need to be shadowed into.
Some of these processes are:
■ prc_mgr (Process Manager) — unshadowed
■ phantom — unshadowed
■ net_mgr — unshadowed
■ tim — unshadowed
■ tmr_mgr — unshadowed
■ pcd — shadowed
The active server’s PCD shadows into the standby’s PCD, so the
standby’s PCD does not to write to shadowed memory. The
standby’s PCD handshakes with every administered PN and counts
accessible PNs to include in state-of-health reports to the Arbiter.
Shutdown
The entire system can be gracefully and manually shut down using the “stop”
command with various arguments:
■ stop -r — Graceful reboot: shuts down software, powers down system,
reboots system.
■ stop -h — Graceful halt: shuts down software, powers down system.
Useful for server replacement.
Whereas, individual Watchdog applications can be shut down using either:
■ Web interface (preferred method for MultiVantage application)
■ Bash commands:
1. “stop -ac” — Shuts down MultiVantage to the Watchdog
2. “stop -ac” — Restarts MultiVantage and restores Web interface
!
CAUTION:
Follow normal escalation procedures before shutting down either an
application or the entire system. Then, execute the shutdown only when
advised by the appropriate tier’s Services representative.