Активация write-cache на Adaptec 5405

Имеем изнчачально:

arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical device number 0
Logical device name : Device 0
RAID level : 10
Status of logical device : Optimal
Size : 571382 MB
Stripe-unit size : 256 KB
Read-cache mode : Enabled
MaxIQ preferred cache setting : Disabled
MaxIQ cache setting : Disabled
Write-cache mode : Disabled (write-through)
Write-cache setting : Enabled (write-back) when protected by battery/ZMM
Partitioned : Yes
Protected by Hot-Spare : No
Bootable : Yes
Failed stripes : No
Power settings : Disabled
--------------------------------------------------------
Logical device segment information
--------------------------------------------------------
Group 0, Segment 0 : Present (0,0) 3SJ262RY00009107YURG
Group 0, Segment 1 : Present (0,1) 3SJ23Z2800009107YUZ7
Group 1, Segment 0 : Present (0,2) 3SJ262YX00009107XUQ6
Group 1, Segment 1 : Present (0,3) 3SJ261VB00009107XUQP

arcconf SETCACHE 1 LOGICALDRIVE 0 wb
Controllers found: 1
WARNING: Power failure without battery/ZMM support will lead to data loss.
Do you wish to continue?
Press y, then ENTER to continue or press ENTER to abort: y

Command completed successfully.

В результате включается кэш:

arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical device number 0
Logical device name : Device 0
RAID level : 10
Status of logical device : Optimal
Size : 571382 MB
Stripe-unit size : 256 KB
Read-cache mode : Enabled
MaxIQ preferred cache setting : Disabled
MaxIQ cache setting : Disabled
Write-cache mode : Enabled (write-back)
Write-cache setting : Enabled (write-back)
Partitioned : Yes
Protected by Hot-Spare : No
Bootable : Yes
Failed stripes : No
Power settings : Disabled
--------------------------------------------------------
Logical device segment information
--------------------------------------------------------
Group 0, Segment 0 : Present (0,0) 3SJ262RY00009107YURG
Group 0, Segment 1 : Present (0,1) 3SJ23Z2800009107YUZ7
Group 1, Segment 0 : Present (0,2) 3SJ262YX00009107XUQ6
Group 1, Segment 1 : Present (0,3) 3SJ261VB00009107XUQP



Command completed successfully.

Обращаю внимание, что без наличия UPS кэш записи включать нельзя!