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Chapter 8. 3DM 2 Reference
100 3ware Serial ATA RAID Controller User Guide for the Power Mac G5
Rescan Controller
The Rescan Controller button scans the ports on the controller. Rescanning
updates the list of available drives shown and updates the status of all ports. If
error conditions have been fixed, the status is updated to reflect that.
Rescanning is useful in variety of maintenance tasks. For example, if you
physically plug in a drive and want the controller to recognize the newly
plugged in drive, Rescan will find it.
Rescan checks all ports. It checks empty ports for newly plugged-in drives. If
those drives were previously part of a 3ware RAID configuration and they
still have valid DCB (Disk Configuration Block) information on them, the
controller tries to piece them back together into a working unit. If a working
unit can be formed, it will appear in the Unit Maintenance list when the scan
is complete, and the operating system will be notified of the unit. This process
is known as importing drives.
If new drives do not have any data indicating they were previously part of a
3ware RAID configuration, they will appear in the Available Drives list.
In addition, if there is a unit with the status Inoperable before a rescan (for
example, a RAID 5 unit missing 2 or more drives), and a rescan finds drives
that complete the unit, the inoperable unit will become a valid unit.
Unit Maintenance
The Unit Maintenance section of the page lists all existing units on the current
controller, and displays summary information about them.
The top row shows information about the unit, while subsequent rows show
summary information about each drive in the unit.
Unit Information
Unit Number. The unit number assigned to the unit by the firmware. Unit
numbers for 9000 series are in sequential order. Use the checkbox next to the
unit to select a unit before clicking one of the task buttons.
Note: If you unplug a drive without first removing it through 3DM, Rescan will not
recognize it as gone unless the drive was in use or until it is required by the system.
Always use the
Remove link to remove a drive before unplugging it.