Mode Page 0C (Notch Parameters); Figure 95. Page 0C (Notch Parameters) - IBM IC35L036UWDY10 - Ultrastar 36.7 GB Hard Drive Specifications

8.8.10 Mode Page 0C (Notch Parameters)

Byte
7
PS = RSVD=
0
1 0
1
ND LPN =
2
= 1 0
3
4
(MSB)
5
6 (MSB)
7
8 (MSB)
|
11
12 (MSB)
|
15
16 (MSB)
|
23

Figure 95. Page 0C (Notch Parameters)

The notch page contains parameters for variable number of blocks per cylinder. Each section of the logical
unit with a different number of blocks per cylinder is referred as a notch. The only field that is changeable
is Active Notch field.
! ND of one means that the drive is a notched drive.
! LPN of zero means that the notches are based upon physical parameters of the drive (cylinder #), not
logical parameters.
! Maximum Number of Notches is the number of notches the drive can support.
! Active Notch indicates to which notch subsequent MODE SELECT/SENSE command parameters
pertain. A value of 0 is used for parameter values which apply to all notches. Values from 1 to the
maximum value depending on the model specify the notch number, where notch 1 is the outermost
notch. The following mode parameters are based on the current active notch:
Mode Page 2
- Read Buffer Full Ratio
- Write Buffer Empty Ratio
Bit
6 5 4
Page Code = 0Ch
Page Length = 16h
Reserved = 0
Maximum Number of Notches = 011h
Active Notch
Starting Boundary
Ending Boundary
Pages Notched =
000000000000100Ch
Ultrastar 146Z10 hard disk drive specifications
3 2 1
RSVD = 0
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
102
0