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

HiCommand
®
Dynamic Link Manager (HDLM) for Windows
®
Systems User’s Guide 225
Error log file size 9900 (KB) 9900 (KB)
Number of error log files 2 2
Trace level 0: Do not output any trace. 0: Do not output any trace.
Trace file size 1000 (KB) 1000 (KB)
Number of trace files 4 4
Path health checking on on
The recommended checking interval depends
on the operating environment.
Automatic failback off Off
Intermittent Error Monitor off Off
Remove LU off The recommended value depends on the
operating environment.
The -lb {on [-lbtype {rr|exrr}]|off} value enables or disables load balancing.
 on: Enabled
 off: Disabled
In a cluster environment, the load balancing function is only available for Thunder
9200/9500V Series, Lightning 9900/9900V Series, TagmaStore, and Universal Storage
Platform V. In a non-cluster environment, the load balancing function is available for
TagmaStore, Thunder 9200/9500V Series, Lightning 9900/9900V Series, TagmaStore,
Universal Storage Platform V, and the EMC DMX series. The above-mentioned conditions are
applied regardless of the settings for the EMC DMX series, EMC CX series, and HP EVA series.
For example, in a cluster environment, the load balancing function is disabled even if it is
set to on for the EMC DMX series. For details on the cluster software supported by HDLM, see
section
2.12.
-lbtype {rr|exrr} value specifies the algorithm to be used for load balancing.
 rr: Round robin
 exrr: Extended round robin
The type of algorithm specified by the -lbtype parameter remains stored in the system,
even when you disable load balancing function by specifying -lb off. Therefore, when you
re-enable load balancing without specifying an algorithm, load balancing will be executed
according to the setting stored in the system. When using MSCS, depending on the micro-
program of the storage system, you may not be able to use the load balancing function. For
more details, see the hardware notes provided with HDLM.
To specify the level of error information you want to collect for an error log, use -ellv
error-log-collection-level. Log files in which a error log collection level can be set
include:
 HDLM manager logs: dlmmgrn.log (n indicates a file number from 1 to 16)
 HDLM GUI logs: dlmguin.log (n indicates a file number of 1 or 2)