LSI Corporation
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12Gb/s MegaRAID SAS Software User Guide
March 2014
Chapter 10: Monitoring Controllers and Their Attached Devices
Running a Patrol Read
Figure 188 Drive Properties
The Power Status property displays the status On when a drive is spun up and displays the status Powersave when a
drive is spun down. Note that SSD drives and other drives that never spin down still show On.
If the drives are in a disk enclosure, you can identify which drive is represented by a disk icon on the left. To do this,
follow these steps:
1. Click the drive icon in the left panel.
2. Select Go To > Physical Drive > Start Locating Drive tab in the right panel.
The LED on the drive in the enclosure starts blinking to show its location.
NOTE LEDs on drives that are global hot spares do not blink.
3. To stop the drive light on the enclosure from blinking, select Go To > Physical Drive > Stop Locating Drive.
10.17 Running a Patrol Read
A patrol read periodically verifies all sectors of the drives connected to a controller, including the system reserved area
in the RAID configured drives. You can run a patrol read for all RAID levels and for all hot spare drives. A patrol read is
initiated only when the controller is idle for a defined period and has no other background activities.
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