0 drive specifications, 2 physical organization – Seagate U4 ST36421A User Manual
Page 13
U4 Family Product Manual, Rev. D
5
1.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient
conditions, at 25°C, and nominal power. For convenience, the phrases
the drive and this drive are used throughout this manual to indicate the
U4 ST38421A, ST36421A, ST34311A and the ST32112A.
1.1 Formatted capacity
1.1.1 Default logical geometry
LBA Mode
When addressing either drive in LBA mode, all blocks (sectors) are
consecutively numbered from 0 to
n–1, where n is the number of
guaranteed sectors as defined above
.
1.2 Physical organization
Drive Model
Guaranteed Mbytes
(1 Mbyte = 10
6
bytes)
Guaranteed
sectors
Bytes per
sector
ST38421A
8,440
16,498,944
512
ST36421A
6,448
12,596,850
512
ST34311A
4,320
8,452,080
512
ST32112A
2,160
4,225,536
512
CHS Mode
Cylinders
Read/Write heads
Sectors per track
ST38421A
16,368
16
63
ST36421A
13,330
15
63
ST34311A
8,944
15
63
ST32112A
4,192
16
63
Drive Model
Read/Write heads (MR)
Number of discs
ST38421A
4
2
ST36421A
3
2
ST34311A
2
1
ST32112A
1
1