Hitachi XP P9500 User Manual page 370

Trace files for which the trace file size can be set are hdlmtrn.log (where
n is a value from 1 to 64). The length of a trace file is fixed. Therefore,
even if the amount of written trace information is less than the set file
size, the file size of each output trace file is always fixed. When trace data
is written to all trace files, new trace data overwrites old trace data (the
oldest file is overwritten first).
-systfn number-of-trace-files
Specify a value from 2 to 64 for the number of trace log files.
By specifying both the trace file size and the number of trace files, you
can collect up to 1,024,000 KB of trace data in total.
If you specify a value smaller than the set value, the KAPL01097-W
message is displayed to confirm execution, and the trace file is
temporarily deleted.
Trace files for which the number of files can be set are hdlmtrn.log
(where n is a value from 1 to 64).
-pchk {on [-intvl checking-interval]|off}
Enables or disables path health checking.
on: Enabled
off: Disabled
For a standby host, or a host connected to the Thunder 9500V series, or
Hitachi AMS/WMS series storage system, we recommend that you
activate path health checking so that you can detect errors in paths
where I/Os operations do not occur.
When you specify on, specify the checking interval of path health
checking by specifying the parameter immediately following on. If you do
not specify a checking interval, path health checking is executed in the
following interval:
¢
¢
The explanation for the following sub-parameter describes how to specify
the checking interval.
-intvl checking-interval
6-18
When the checking interval has not been specified before:
Every 30 minutes (default setting)
When the checking interval has been specified before:
The previously specified interval
Specify the checking interval between path health checks. Specify a
value from 1 to 1440 minutes depending on the user environment.
When you change the checking interval, the new setting takes effect
immediately. When the checking interval is shortened and the
checking interval after the change (from the end of the previous path
health check) has already elapsed, the path health check will start
over.
The path health check interval setting remains stored in the system
even if you disable the function by changing the path health checking
to off. Therefore, when you re-enable path health checking and do
Command Reference
Hitachi Dynamic Link Manager User Guide (for Linux(R))