IBM Power Systems 57D7/57B4 Adapter Write Cache
Version 1.3 dated May 19, 2016
You should now see a screen similar to the following.
Change Disk Configuration
Type option, press Enter.
1=Change Disk Configuration
OPT Name
PCI/SCSI Location
Description
Status
--- ------ -------------------------
---------------------------- -------------
sda
0003:70:00.0/0:2:0:0
RAID 0 Array
Optimized
0003:70:00.0/0:0:0:0
RAID 0 Array Member
Active
sdb
0003:70:00.0/0:2:1:0
RAID 10 Array
Optimized
0003:70:00.0/0:0:1:0
RAID 10 Array Member
Active
0003:70:00.0/0:0:2:0
RAID 10 Array Member
Active
sdc
0003:70:00.0/0:2:2:0
RAID 5 Array
Optimized
0003:70:00.0/0:0:3:0
RAID 5 Array Member
Active
0003:70:00.0/0:0:4:0
RAID 5 Array Member
Active
0003:70:00.0/0:0:5:0
RAID 5 Array Member
Active
e=Exit
q=Cancel
r=Refresh
t=Toggle
Here, you will see all the physical disks as well as the logical RAID array devices as well. In this example,
we will choose the first RAID array,
sda
. Using the arrow keys, navigate to the desired RAID array, select
the device by entering ’1’, then press
Enter
.
Change Configuration of Disk
Current Disk configurations are shown. To change setting hit ’c’ for options
menu. Highlight desired option then hit Enter.
c=Change Setting
Queue Depth. . . . . . . . . . . . . . . : 4
Device Write Cache Policy. . . . . . . . : Write Back
Or leave blank and press Enter to cancel
e=Exit
q=Cancel
Here we can see the
Device Write Cache Policy
is set to
Write Back
, as expected. If it is desired to
disable the volatile adapter write cache for a specific RAID array, on this same screen, using the arrow keys,
select the
Device Write Cache Policy
field, then type ’c’ to display the possible options. Then use the
arrow keys to select the desired caching mode and press
Enter
. Press
Enter
again to confirm the change
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