How to safely shutdown your iSeries when integrated Windows servers are
present
The easiest way to ensure your integrated servers will be shut-down safely
is to always manually shut them down before shutting down the iSeries™. You may
grow tired of this tedious task, however. The CL command PWRDWNSYS *CNTRLD will attempt to power-down each of the integrated servers,
giving each of them a period of time (the NWSD attribute SHUTDTIMO, by default
15 minutes) in which to shut-down. Note that there is no guarantee that they
will finish shutting down within this time period.
Note:
The CL command PWRDWNSYS *IMMED is not recommended. This will power
down the iSeries immediately, without attempting to shut down any integrated servers.
Table 2.
| Action |
Result |
| Shut down the integrated server manually. |
The integrated server is varied off properly, with no
risk of data loss. |
| Issue the CL command pwrdwnsys
*cntrld. |
The integrated server is given the length of time specified
in the shutdown timeout attribute of its NWSD in which to shut down, then
the iSeries continues to power down. |
| Issue the CL command pwrdwnsys
*immed. |
The iSeries powers down immediately and does not
shut down any integrated servers. Data corruption may result. |
If your i5/OS™ system uses the Power On/Off Schedule, the Power-Off
exit program (QEZPWROFFP) should be changed to vary off all NWSDs before calling
the PWRDWNSYS command. Careful consideration must be given to scheduling as
the number and activity of each server will determine the amount of time necessary
to completely vary off each server. Use the Submit multiple jobs (SBMMLTJOB)
and Job description (JOBD) parameters of the Vary Configuration (VRYCFG) command
to vary multiple servers at the same time in batch. The scheduled power on
must not occur before the system has a chance to vary off all servers and
issue the PWRDWNSYS. See the Schedule a
system shutdown and restart topic.