Seagate 20GB Serial ATA ST920217AS Data Sheet
Product codes
ST920217AS
LD25 Series SATA Product Manual, Rev. C
5
2.2
Formatted capacity
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environ-
ment and formatting.
2.3
Default logical geometry
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.
where n is the number of guaranteed sectors as defined above.
2.4
Physical organization
2.5
Recording and interface technology
Model
Formatted capacity*
Guaranteed sectors
Bytes per sector
ST9402115AS
40 Gbytes
82,443,600
512
ST920217AS
20 Gbytes
41,021,800
512
Cylinders
Read/write heads
Sectors per track
16,383
16
63
Drive model
Read/write heads
Number of discs
ST9402115AS
2
1
ST920217AS
1
1
Interface
Serial ATA (SATA)
Recording density BPI (bits/inch max)
675,900
Track density TPI (tracks/inch max)
114,000
Areal density (Gbits/inch
2
max)
81
Spindle speed (RPM) (
±
0.2%)
5,400
Maximum Internal transfer rate (Mbytes/sec)
57.6
I/O data-transfer rate (Mbytes/sec max)
150 (SATA 1.0)
Interleave
1:1
Cache buffer
2 Mbytes (2,048 kbytes)