U Series CE Family Product Manual, Rev. A

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 S T 38 00 2 0A CE , S T 3 60 01 0A C E, S T 3 4 08 10 A CE a nd th e ST320410ACE.

1.1 Formatted capacity

Drive Model

Formatted Gbytes

Guaranteed

Bytes per

 

 

sectors

sector

 

 

 

 

 

 

 

 

ST380020ACE

80

156,301,488

512

 

 

 

 

ST360020ACE

60

117,231,408

512

 

 

 

 

ST340810ACE

40

78,165,360

512

 

 

 

 

ST320410ACE

20

39,102,336

512

 

 

 

 

1.1.1 Default logical geometry

CHS Mode

Cylinders

Read/Write

Sectors per

 

 

heads

track

 

 

 

 

 

 

 

 

ST380020ACE

16,383

16

63

 

 

 

 

ST360020ACE

16,383

16

63

 

 

 

 

ST340810ACE

16,383

16

63

 

 

 

 

ST320410ACE

16,383

16

63

 

 

 

 

LBA Mode

When addressing drive in LBA mode, all blocks (sectors) are consecu- tively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

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Seagate ST380020ACE, ST320410ACE, ST340810ACE, ST360020ACE manual Formatted capacity, Default logical geometry, LBA Mode