Formatted Capacity; Lba Mode; Default Logical Geometry; Recording And Interface Technology - Seagate Barracuda ST31000340AS Product Manual

2.1

Formatted capacity

Formatted
Model
capacity*
ST31000340AS
1000 Gbytes
ST31000640AS
ST3750330AS
750 Gbytes
ST3750630AS
ST3640330AS
640 Gbytes
ST3640630AS
ST3500320AS
ST3500620AS 500 Gbytes
ST3500820AS
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.1.1

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 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-
bit addressing support of drives with capacities over 137 Gbytes.
2.2

Default logical geometry

Cylinders Read/write heads
16,383 16
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.
2.3

Recording and interface technology

Interface
Recording method
Recording density (kbits/inch max)
Track density (ktracks/inch avg)
2
Areal density (Gbits/inch
Spindle speed (RPM)
Internal data transfer rate (Mbits/sec max)
Sustained data transfer rate (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
10
Guaranteed
sectors
1,953,525,168
1,465,149,168
1,250,284,896
976,773,168
avg)
Bytes per sector
512
512
512
512
Sectors per track
63
Serial ATA (SATA)
Perpendicular
1090
150
164
7,200 ± 0.2%
1287
105
300
Barracuda 7200.11 Serial ATA Product Manual, Rev. F