HiCommand Dynamic Link Manager (HDLM) for Windows Systems User's Guide (HIT5201-96001, January 2008)

204 Chapter 6 GUI Reference
Table 6.10 lists and describes the items displayed in the HDLM Component Information dialog
box.
Table 6.10 Items Displayed in the HDLM Component Information Dialog Box
Item Description
Component HDLM component
Version number Version number of the component
Status Status of the component:
Alive: Normal
Dead: Stopped
Wakeup time Time the component was started
Clicking the OK button closes the HDLM Component Information dialog box.
Basic function settings:
In this area, you can set whether to use load balancing, path health checking, automatic
failback, intermittent error monitoring, and LU dynamic deletion functionality.
Load balancing
Specify whether or not the load balancing function is to be used. To use the function,
select ON; otherwise, select OFF.
When ON is selected, you must also select a load-balancing algorithm from the pull-
down list box:
– Round robin
– Extended round robin
Path health checking
Specify whether or not the path health checking function is to be used. To use the
function, select ON; otherwise, select OFF.
When ON is selected, you can specify the interval (in minutes) at which path health
checks are performed. Specify a value from 1 to 1440 minutes depending on the user
environment. The default is 30.
If you change the checking interval, the new interval takes effect immediately. If you
shorten the checking interval and a path health check is already overdue according to
the new checking interval (since the last path health check was completed), path health
checking begins immediately.
Once a checking interval is set, it remains in effect even if the path health checking
function is subsequently changed from OFF to ON. In such a case, path health checking
begins when the specified checking interval elapses after the path health checking
function setting was changed to ON.
Setting the path health checking function to ON provides advantages such as the
detection of errors on paths on which I/O requests are not normally issued (such as non-
owner paths of Thunder 9200, Thunder 9500V Series, or TagmaStore AMS/WMS series; or
paths of a standby host of a cluster system).