3Ware 9550SXU-12 User Manual page 246

3DM 2 Reference
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Maintenance Task Buttons
Below the list of units, a row of task buttons lets you perform maintenance
and configuration tasks related to the unit. Before clicking one of these
buttons, select the appropriate unit.
Verify Unit. Puts the selected unit in verifying mode. If the Advanced Verify
schedule is selected on the Scheduling page, the unit will not start actively
verifying until the scheduled time, and the status will indicate "Verify-
Paused." (The Unit Details page will indicate whether a unit is actively
verifying.) If the Basic Verify schedule is active, clicking
the verification process, and verify will begin within approximately 10 to 15
minutes.
If the unit you selected to verify is a redundant unit, the redundancy of the unit
will be verified. For example, it will check parity for a RAID 5 or check data
consistency for a RAID 1. If the unit you checked is not a redundant unit,
verify will do a surface scan of the media. During verification, I/O continues
normally. For RAID 0, single disks, and spares, there is only a slight
performance loss. For redundant units, you can set the background task rate
on the Controller Settings page to specify whether more processing time
should be given to verifying or to I/O. For more information, see "About
Verification" on page 162 and "Setting Background Task Rate" on page 172.
While a unit is verifying, the status changes to Verifying and a
link appears in the right-most column of the Unit Maintenance table.
Note:
If the unit has not previously been initialized and you click Verify Unit, the
initialization process starts. Initialization cannot be halted, so no Stop Verify link
appears. (Initialization can be paused, however, through Scheduling. Initialization
follows the Rebuild schedule, so turning on scheduling for Rebuild will pause
initialization, as well.) For more information about initialization, see "About
Initialization" on page 158.
Replaces a failed drive in a degraded unit with an available
Rebuild Unit.
drive and begins rebuilding the RAID. When you select a degraded unit and
click , a dialog box listing available drives appears, so that you
Rebuild Unit
can select the drive you want to use. If the degraded unit has more than one
failed drive (for example, a RAID 10 where both mirrored pairs each have a
failed drive), you will repeat this process a second time.
If rebuild scheduling is enabled on the Scheduling page, the unit will not start
actively rebuilding until the scheduled time, and the status will change to say
"Rebuild-Paused." (The Unit Details page indicates whether a unit is actively
3ware SAS/SATA RAID Software User Guide, Version 9.5.1
Verify Unit begins
Stop Verify