HP Hitachi Dynamic Link Manager Software - Manual (Page 70)

To enable intermittent error monitoring, specify on. To disable intermittent
error monitoring, specify off. When you specify on, you can use the -intvl
and -iemnum parameters to specify intermittent error conditions (the
conditions used by the system to determine whether an intermittent error is
occurring). In the -intvl parameter, specify the monitoring interval for an
intermittent error. In the -iemnum parameter, specify the number of times
that the error is to occur. If these parameters are omitted and 3 or more
errors occur within 30 minutes, HDLM assumes that an intermittent error is
occurring.
Setting Up Dynamic I/O Path Control
To prevent degrading of I/O performance, this function dynamically switches
the output controllers for HDLM, following the switching of controllers
performed by the storage system.
The dynamic I/O path control function can be set for each storage system or
LU. The checking interval for reviewing the switching status information can
also be set in order to properly follow the switching of controllers performed
by the storage system.
The following is an example of setting the dynamic I/O path control function:
dlnkmgr -s host-name -u user-name -p password set -dpc on -pathid
000001 -lu
dlnkmgr -s host-name -u user-name -p password set -dpcintvl 10
Specify "on" to enable the dynamic I/O path control function, or "off" to
disable the function. For the -pathid parameter, specify an LU, or the ID of a
path connected to the storage system. For the -dpcintvl parameter, specify
the checking interval (in minutes) for reviewing the information about the
switching of controllers performed by the storage system.
Setting Up Audit Log Data Collection
If you want to collect audit log data, you must also specify the collection level
for audit log data and the audit log categories.
The table below lists and describes the values for the audit log collection level
setting. An audit log data collection level is a severity level. The default is 6.
Table 3-5 Values Indicating Audit Log Data Collection Levels
Value (severity) Explanation
0 Error-level audit log data is collected.
1
2
3
4 Error-level and Warning-level audit log data is
collected.
5
3-18
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide for VMware ®