CLI Guide

rescan

Description This command forces rediscovery of disks and enclosures in the storage system.

CAUTION: Performing a rescan will temporarily pause all I/O processes.

If both Storage Controllers are online and able to communicate with both expansion modules in each

connected enclosure, this command rebuilds the internal SAS layout information, reassigns enclosure IDs

based on controller A’s enclosure cabling order, and ensures that the enclosures are displayed in the proper

order. A manual rescan temporarily pauses all I/O processes, then resumes normal operation. It can take up to

two minutes for the enclosure IDs to be corrected.

A manual rescan may be needed after system power-up to display enclosures in the proper order. Whenever

you replace a drive chassis or controller chassis, perform a manual rescan to force fresh discovery of all drive

enclosures connected to the controller enclosure.

A manual rescan is not needed after inserting or removing non-FDE disks because the controllers

automatically detect these changes. When disks are inserted they are detected after a short delay, which

allows the disks to spin up

Minimum role manage

Syntax

rescan

Examples

Scan for device changes and re-evaluate enclosure IDs.

# rescan

reset all-statistics

Description

Resets performance statistics for both controllers. You can specify either to reset all live statistics to zero, or

to reset (clear) all historical performance statistics for all disks. If you reset historical statistics, an event will

be logged and new data samples will continue to be stored every fifteen minutes.

Minimum role manage

Syntax

reset all-statistics

[historical]

[prompt yes|no]

Parameters historicalOptional.

Specifies to reset historical statistics instead of live statistics. If this parameter is omitted, the command will

reset live statistics instead of historical statistics.

prompt yes|noOptional. For scripting, this specifies an automatic reply to the confirmation prompt that

will appear if the historical parameter is specified:

• yes: Allow the command to proceed

• no: Cancel the command

If the historical parameter is specified and the prompt parameter is omitted, you must manually reply to

the prompt. If the historical parameter is omitted, the prompt parameter has no effect. There is no

confirmation prompt for live statistics

Examples Reset all live statistics for both controllers.

# reset all-statistics

Reset all historical disk-performance statistics for both controllers.

# reset all-statistics historical