Appendix C: Using the Adaptec RAID Controller Utility
●
99
For the best device performance, don’t change the default settings.
Note:
Default settings are shown in
bold
type.
Formatting and Verifying Disk Drives
You can use the disk utilities to low-level format or verify your disk
drives. (New disk drives are low-level formatted at the factory and do
not need to be low-level formatted again.)
Caution:
Before you format a disk drive, back up all data.
Formatting destroys all data on a disk drive.
To format or verify a disk drive:
1
Start the Adaptec RAID Controller utility (see
2
Select the controller you want, press
Enter
.
3
Select
Disk Utilities
.
4
Select the disk drive you want, then press
Enter
.
5
Select
Format Disk
or
Verify Disk Media
.
Option
Description
Maximum
Transfer Rate
Shows the maximum data transfer rate that the SCSI
channel supports.
Enable
Disconnection
When enabled, the SCSI device can disconnect from the
SCSI channel. Default is
Yes
(enabled).
Initiate Wide
Negotiation
When enabled, the SCSI channel attempts 16-bit data
transfer instead of 8-bit data transfer. Default is
Yes
(enabled).
QAS
When enabled, QAS (Quick Arbitration and Selection) is
used to eliminate overhead and speed up data transfers on
the SCSI bus. Default is
No
(disabled).
Note
—Adaptec recommends that you do not enable QAS
if you are using an enclosure that supports Ultra320
expanders.
Packetized
When enabled, SCSI packetization (encapsulation) is used
to reduce overhead and speed data transfer. Default is
Yes
(enabled).
!
