Adaptec 5805Z User Guide - Page 84

Modifying Cache Settings, Initializing Disk Drives, Rescanning Disk Drives, Secure Erasing Disk Drives

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Appendix C: Using the Adaptec RAID Configuration Utility ● 84 Option Power Off Drive After Verify Drive After Description The duration of inactive state of the array/drive after which it is powered off. This is an optional setting. Note: Power Off Drive After duration should be greater than Slow Down Drive After Duration. The regular time interval at which the system performs a health check of the array/drive. Modifying Cache Settings You can modify the read and write cache settings for an array. To modify cache settings: 1 Select Manage Arrays from the main ACU menu. 2 Select the array, then press Ctrl+C. The Modify Cache Settings window opens. 3 Enable or disable read caching. 4 Press Tab. 5 Enable or disable write caching: select Enable always for "write-back" caching; select Disable for "write-through" caching. 6 Press Enter to accept the values. Initializing Disk Drives If a disk drive appears grayed-out (unavailable for use in a new array), it may need to be initialized. To begin initializing a disk drive, select Initialize Drives from the main ACU menu. You can initialize one drive or multiple drives. If an error occurs during initialization, the message "Initializing drives...FAILED x of n" is displayed. Press Enter to see a list of drives that failed to initialize. Press Esc to continue. ! Caution: Do not initialize a disk drive that is part of an array. Initializing a disk drive that's part of an array may make the array unusable. Back up all data from your disk drive before you initialize it. Rescanning Disk Drives To begin rescanning a disk drive, select Rescan Drives from the main ACU menu. Secure Erasing Disk Drives When you perform a secure erase on a disk drive, all data on that disk drive is completely and irretrievably eradicated. Secure erase performs three distinct writing passes to the disk drive being erased-it does not just write zeros.

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Appendix C: Using the Adaptec RAID Configuration Utility
●
84
Modifying Cache Settings
You can modify the read and write cache settings for an array.
To modify cache settings:
1
Select
Manage Arrays
from the main ACU menu.
2
Select the array, then press
Ctrl+C
.
The Modify Cache Settings window opens.
3
Enable or disable read caching.
4
Press
Tab
.
5
Enable or disable write caching: select Enable always for “write-back” caching; select
Disable for “write-through” caching.
6
Press
Enter
to accept the values.
Initializing Disk Drives
If a disk drive appears grayed-out (unavailable for use in a new array), it may need to be
initialized.
To begin initializing a disk drive, select
Initialize Drives
from the main ACU menu. You can
initialize one drive or multiple drives. If an error occurs during initialization, the message
“Initializing drives...FAILED x of n” is displayed. Press
Enter
to see a list of drives that failed to
initialize. Press
Esc
to continue.
Caution:
Do not initialize a disk drive that is part of an array. Initializing a disk drive that’s
part of an array may make the array unusable.
Back up all data from your disk drive before you initialize it.
Rescanning Disk Drives
To begin rescanning a disk drive, select
Rescan Drives
from the main ACU menu.
Secure Erasing Disk Drives
When you perform a secure erase on a disk drive, all data on that disk drive is completely and
irretrievably eradicated. Secure erase performs three distinct writing passes to the disk drive
being erased—it does not just write zeros.
Power Off Drive After
The duration of inactive state of the array/drive after which it is powered
off. This is an optional setting.
Note:
Power Off Drive After duration should be greater than Slow
Down Drive After Duration.
Verify Drive After
The regular time interval at which the system performs a health check of
the array/drive.
Option
Description
!