Adaptec 5805 User Guide - Page 86

Modifying Cache Settings, Initializing Disk Drives, Rescanning Disk Drives, Manage Arrays, Ctrl+C

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Appendix C: Using the Adaptec RAID Configuration Utility ● 86 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. You can also modify the MaxIQ cache settings. The MaxIQ cache uses the MaxIQ-compatible Solid State Drives in your system as a read cache pool to improve performance in read-intensive applications. Note: For more information about MaxIQ, see Using the ACU to Manage the MaxIQ Pool on page 88. 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 Select the preferred MaxIQ setting (Enable/Disable), press Tab, then enable or disable MaxIQ. Note: To enable MaxIQ caching, read caching must also be enabled. 6 Press Tab. 7 Enable or disable write caching: select Enable always for "write-back" caching; select Disable for "write-through" caching. 8 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.

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Appendix C: Using the Adaptec RAID Configuration Utility
●
86
Modifying Cache Settings
You can modify the read and write cache settings for an array. You can also modify the MaxIQ
cache settings. The MaxIQ cache uses the MaxIQ-compatible Solid State Drives in your system
as a read cache pool to improve performance in read-intensive applications.
Note:
For more information about MaxIQ, see
Using the ACU to Manage the MaxIQ Pool
on page
88
.
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
Select the preferred MaxIQ setting (Enable/Disable), press
Tab
, then enable or disable
MaxIQ.
Note:
To enable MaxIQ caching, read caching must also be enabled.
6
Press
Tab
.
7
Enable or disable write caching: select Enable always for “write-back” caching; select
Disable for “write-through” caching.
8
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.
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
!