ULTRASTOR ULTRA 12F24, Installation Manual

Page: 37 / 52

APPENDIX E
Assume X is the number of cylinders for the drive, Y is the number of
heads, Z is the number of sectors per track. Enter the following number
accordingly.
Disk Parameters If no sector mapping If 63 sector mapping
1. Cylinders
2. Heads
3. Write reduce
4. Write Precomp
5. ECC
6. Control
7. Landing Zone
8. Sectors/Track
X-2
Y
0
65535
7
0 if Y =<8
X-2
Z
((X-2)*Y*Z) / (63*16)
16
0
65535
7
1 if Y >8
((X-2)*Y*Z) / (63*16)
63
Note, the minus 2 for the cylinder number is for the two reserved cylinders
that is used by the ESDI drive to store manufacturing defect map.
The following procedures for creating UNIX partition, scanning disk,
creating filesystem are the same as the regular procedures for adding the
2nd drive in the primary controller. Please refer to "UNIX system
administration manual" for detailed procedures.
4. Add filesystem to the kernel
Run sysadmsh —> filesystem —> add
This is the same procedure as adding filesystem for the 2nd drive in the
primary controller. Refer to "UNIX system administration manual" for
detailed procedures
Reference Manual Page E-3
NOTE
Before making filesystem, scanning the entire UNIX partition is
required for the kernel to record all the defects (which were marked as
bad sectors by the controller low level format utility) in the drive.