HP 3PAR InForm OS 3.1.1 Command Line Interface Reference

tunesys
DESCRIPTION
The tunesys command is used to analyze and detect poor layout and disk utilization across an
entire HP 3PAR Storage System array. This command runs a series of low level operations to effect
a re-balance of resources on the system.
SYNTAX
tunesys [options]
AUTHORITY
Super, Edit
Any role granted the sys_tune right
OPTIONS
-nodepct <percentage>
Control the detection of any imbalance between LD capacity allocation between nodes. If any LD
in a group is <percentage> greater than the mean average of the group, then the VVs associated
with that LD will be tuned. The <percentage> parameter must be between 1 and 100. The
default value is 3.
-chunkpct <percentage>
Control the detection of any imbalance in PD chunklet allocation between PDs owned by individual
nodes. if a PD has utilization of <percentage> more than the mean average for that device type,
then that disk can potentially be tuned. Used in conjunction with the diskpct option.
<percentage> must be between 1 and 100. The default value is 5.
-diskpct <percentage>
Specify the percentage of disks identified by the -chunkpct option over which PD chunklet level
tuning will be started. <percentage> must be between 1 and 100. The default value is 10.
-maxtasks <number>
Specify the maximum number of individual tune task which the tunesys command can run at a
time. <number> must be between 1 and 8. The default value is 2.
-dr
Specify that the command is a dry run and that the system will not be tuned. The result of the
analysis can be found in the task detail log (showtask -d taskid).
-waittask
Wait for all tasks created by this command to complete before returning.
-f
Do not ask for confirmation.
SPECIFIERS
None.
598 Tune Commands