Adaptec asr-5405 kit [92/116] Checking backup unit status

1. Start the ARC utility in uEFI mode (see Ctrl-A or uEFI/HII? on page 83).

2. Scan for controllers, then select the controller you want.

3. Select Controller Settings.

4. Select Controller Conguration, then select Cache Preservation.

5. Select Enabled.

Clearing the Controller Cache

You can clear the preserved dirty cache (data not committed to disk) for a specic logical drive or for

all logical drives on the controller if you expect a failed enclosure or logical drive to remain ofine.

To clear the cache for all logical drives on the controller:

1. Start the ARC utility in uEFI mode (see Ctrl-A or uEFI/HII? on page 83).

2. Scan for controllers, then select the controller you want.

3. Select Controller Settings.

4. Select Clear Cache Preserved on Controller.

To clear the cache for a specic logical drive:

1. Start the ARC utility in uEFI mode (see Ctrl-A or uEFI/HII? on page 83).

2. Scan for controllers, then select the controller you want.

3. Select Logical Device Conguration, then select a logical drive.

4. Select Clear Cache Preserved.

Checking the Cache Preservation Status

To check the controller's cache preservation status, select Controller State from the Controller Settings,

Advanced Conguration menu. With cache preservation enabled, the controller enters the Cache

Preserved state; otherwise, it remains in the Optimal state.

Checking Backup Unit Status

To check the status of the controller's ash backup unit, select Backup Unit Status from the Controller

Settings menu. This option is available only if the controller is congured with a ash backup unit.

Formatting and Verifying Disk Drives

You can use the ARC Disk Utilities tool to low-level format or verify your disk drives. (New disk drives

are low-level formatted at the factory and do not need to be low-level formatted again.)

Caution: Before you format a disk drive, back up all data. Formatting destroys all data

on a disk drive.

To format or verify a disk drive:

1. Start the ARC utility (see Running the ARC Utility on page 83).

2. Select the controller you want, then press Enter.

3. Select Disk Utilities.

4. Select the disk drive you want, then press Enter.

5. Select Format Disk or Verify Disk Media.

Locating Disk Drives

You can use the Identify Drive feature to physically locate a disk drive by blinking the LED.

Note: This feature is only available with disk drives that have an activity LED.

92Proprietary and Condential to PMC-Sierra, Inc., and for its customers.

Document No.: CDP-00310-01-A Rev. A, Issue

Serial Attached SCSI RAID Controllers Installation and User's Guide