EMS Manual

Configuring EMS
EMS Manual—426909-005
12-4
Log Files

$SYSTEM.SYSTEM.ZZEVCONF as a context file. The context data in this file is
used after a system load or log file failure.

$SYSTEM.ZLOGnn.ZZEV0000 as a log file. This file receives the first event
messages logged after the system comes up.

$SYSTEM.ZLOGnn.ZZEVCONF as a context file. A configuration file
(ZZEVCONF) is always present on the subvolume that contains the log files. For a
more complete description of the ZZEVCONF files, see Log File Operation on
page 12-23.
You can switch logging to another subvolume by altering the primary collector
LOGSUBVOL attribute, using the SPI CONTROL command or the EMSCCTRL
program. If you select a new subvolume, a new ZZEVCONF file is created if one does
not already exist. New log files are created by the primary collector, as needed, on the
new subvolume.
Figure 12-2 shows the location of the primary collector context and log files on the
system volume, as defined by the system at system load.
Alternate Collector Log Files
To choose the log subvolume an alternate collector is to use, include the subvolume
name as a parameter (LOGSUBVOL) on the TACL RUN command when you start the
collector.
Figure 12-2. ZZEVCONF and Log Files on the System Volume
$SYSTEM Volume
$SYSTEM.SYSnn
subvolume
$SYSTEM.ZLOGnn
subvolume
$SYSTEM.SYSTEM
subvolume
Other cold load files
OSIMAGE
ZZEVCONF
ZZEVCONF
ZZEV0000 ZZEVnnnn
VST007.vsd