The Expand Priority setting determines the urgency with which the controller treats an internal command to expand an array.
•At the low setting level, normal system operations take priority over an array expansion.
•At the medium setting, expansion occurs for half of the time, and normal system operations occur for the rest of the time.
•At the high setting, the expansion takes precedence over all other system operations.
Syntax:
<target> modify ep=highmediumlow?
where <target> is a controller.
Example command:
=> ctrl slot=3 modify ep=high
Setting the surface scan modeThe surfacescanmode keyword sets the surface mode for the controller. The available modes are disable, high, or idle. If you specify the idle mode, you must also specify a surface scan delay value.
Syntax:
<target> modify [ surfacescanmode=disable idle high ? ]
Example commands:
controller slot=1 modify surfacescanmode=high controller slot=1 modify surfacescanmode=disable
controller slot=1 modify surfacescanmode=idle surfacescandelay=3
Changing the surface scan delay timeThe setting for the surface scan delay determines the time interval for which a controller must be inactive before a surface scan analysis is started on the physical drives that are connected to it.
Surface scan analysis is an automatic background process that ensures that you can recover data if a drive failure occurs. The scanning process checks physical drives in
Syntax:
<target> modify ssd=#
where <target> is a controller and # is a number between 1 and 30. This number determines the delay time in seconds, but you do not need to include units with the command.
Example command:
=> ctrl sn=P56350D9IP903J modify ssd=3
If a logical drive has failed and the data on it is invalid or
Syntax:
Operations 76