Seagate ST380012ACE Product Manual - Page 15

U Series 9 ce Product Manual, Rev. F

5

2.2

Formatted capacity

2.2.1

LBA mode

When addressing these drives 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

.

See Section 4.1.2, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-

bit addressing support of drives with capacities over 137 Gbytes.

2.3

Default logical geometry

2.4

Physical organization

2.5

Recording and interface technology

Model

Formatted

capacity

Guaranteed

sectors

Bytes per sector

ST3160022ACE

160 Gbytes

312,581,808

512

ST3120025ACE

120 Gbytes

234,441,648

512

ST380012ACE

80 Gbytes

156,301,488

512

Cylinders

Read/write heads

Sectors per track

16,383

16

63

Model

Read/write heads

Number of discs

ST3160022ACE

4

2

ST3120025ACE

3

2

ST380012ACE

2

1

Interface

ATA

Recording method

16/17 EPRML

Recording density BPI (bits/inch max)

595,000

Track density TPI (tracks/inch max)

94,600

Areal density (Mbits/inch

2

max)

56.3

Internal data-transfer rate OD (Mbytes/sec max)

85.4

Sustained data transfer rate OD (Mbytes/sec max)

48

I/O data-transfer rate (Mbytes/sec max)

100 (Ultra DMA mode 5)

Interleave

1:1

Cache buffer

2 Mbyte (2,048 kbytes)

Section	Page
1.0 Introduction	11
2.0 Drive specifications	13
2.1 Specification summary table	13
2.2 Formatted capacity	15
2.2.1 LBA mode	15
2.3 Default logical geometry	15
2.4 Physical organization	15
2.5 Recording and interface technology	15
2.6 Physical characteristics	16
2.7 Seek time	16
2.8 Start/stop times	16
2.9 Power specifications	16
2.9.1 Power consumption	17
2.9.1.1 Typical current profile	18
2.9.2 Conducted noise	19
2.9.3 Voltage tolerance	19
2.9.4 Power-management modes	19
2.10 Environmental specifications	20
2.10.1 Ambient temperature	20
2.10.2 Temperature gradient	20
2.10.3 Humidity	20
2.10.3.1 Relative humidity	20
2.10.3.2 Wet bulb temperature	20
2.10.4 Altitude	20
2.10.5 Shock	21
2.10.5.1 Operating shock	21
2.10.5.2 Nonoperating shock	21
2.10.6 Vibration	21
2.10.6.1 Operating vibration	21
2.10.6.2 Nonoperating vibration	21
2.11 Acoustics	21
2.12 Electromagnetic immunity	22
2.13 Reliability	22
2.14 Agency certification	23
2.14.1 Safety certification	23
2.14.2 Electromagnetic compatibility	23
2.14.3 FCC verification	23
3.0 Configuring and mounting the drive	25
3.1 Handling and static discharge precautions	25
3.2 Breather filter hole precautions	26
3.3 Jumper settings	27
3.3.1 Master/slave configuration	27
3.3.2 Cable-select option	27
3.3.3 Alternate capacity jumper	27
3.3.4 Ultra ATA/100 cable	28
3.4 Drive mounting	28
4.0 ATA interface	31
4.1 ATA interface signals and connector pins	31
4.1.1 Supported ATA commands	33
4.1.2 Identify Device command	35
4.1.3 Set Features command	38
4.1.4 S.M.A.R.T. commands	39
5.0 Seagate Technology support services	41
Index	47
Numerics	47
A	47
B	47
C	47
D	47
E	47
F	47
G	47
H	47
I	47
J	48
K	48
L	48
M	48
N	48
O	48
P	48
R	48
S	48
T	49
U	49
V	49

Seagate ST380012ACE Product Manual - Page 15

Formatted capacity, Default logical geometry, Physical organization, Recording and interface

Page 15 highlights