Setting Array Parameters - Accusys ACS-8990 User Manual

Setting array parameters

The parameters of the single or multiple ACS-8990 RAIDs are set and reconfigured from the
RAID params submenu located at Main menu > RAID Params menu.
1 RAID params 1.1 Array 1
1.2 ~ 1.8
Array 2 ~ Array 8*
1.9
Stripe Size
1.A
Write Buffer
1.B
Performance
1.C
2TB
1.D
Track
To create one or several arrays and to set their parameters:
1. If you have no existing arrays that you wish to keep, select Array 1 (1.1). Otherwise,
select the next available array (1.2 ~ 1.8)
2. Signal intent to reconfigure the selected array (1.x.1)
3. Choose a RAID level for the selected array (1.x.2)
4. Indicate the number of disks to be included in the selected array (1.x.3). Remember to
leave at least 1 disk free if you want a hot spare disk to be automatically configured
5. Partition the array into one or more slices (1.x.4)
6. If you wish to create another array, repeat from step one. If not, continue
Next, make sure these parameters are set for the arrays collectively:
7. Set the striping block size (1.9)
8. Enable or disable the buffer for write operations to memory (1.A)
9. Set writing method as random or sequential (1.B)
10. Set the Slice over 2TB or not (1.C)
11. Set the Sector Per Track as 128 or 255 (1.D)
Finally,
12. Go to the NVRAM menu to save the new configuration (5.1). Then restart (5.3)
48
1.1.1
Re-Conf RAID
1.1.2
RAID Level
1.1.3
Disk Number
1.1.4
Slice
1.1.5
Online Init
*Submenus as for Array 1
1024 / 512 / 256 /
128 / 64 / 32 / 16 /
8 sectors
Enable / Disable
Random /
Sequential
Slice over No
Yes
Sector per
128 (default)/255
ACS-8990/89200/89230 User's Manual
No / Yes
0 / 1 / 3 / 5 / 0+1 /
30 / 50 /NRAID/None
Choices dependent
on RAID level
Create slices,
set slice size
Enable / Disable
16 byte CDB/Variable
Sector Size