Set auto_path_change – HP StorageWorks 1510i Modular Smart Array User Manual

Page 78

set auto_path_change

Description

for dual-controller configurations only, turns on or off automatic, MSA-based

I/O load balancing. If automatic path changes are enabled, the controller

firmware may subsequently and automatically change controller paths for a

target, based on I/O load.

Syntax

set auto_path_change enable|disable [prp=<#>] [mnr=<#>]

[twp=<#>] [twl=<#>]

Operands

enable|disable

Enables or disables automatic path changes.

prp=<#>

The minimum percent of proxied requests to trigger a path change, where

the percentage <#> is from 51 to 100.

mnr=<#>

The minimum number of requests issued to the LUN to trigger a path change.

twp=<#>

The minimum time to wait after the system is powered on or restarted to

make any path changes, where <#> is from 0 to 255 minutes.

twl=<#>

The minimum time to wait for subsesquent path changes to the same LUN,

where <#> is from 0 to 255 minutes.

Example

CLI> set auto_path_change mnr=100

Implicit (automatic load-based) LUN ownership changes are currently ENABLED.

Implicit LUN ownership change preferences are as follows:

Minimum % of proxied requests to trigger implicit path change..:

75%

Minimum number of requests to LUN before path change enabled...:

128

Minimum time to wait before changing ownership after power-up..:

30 minutes

Minimum time between ownership changes for LUN.................:

30 minutes