6
DB35.4 Series SATA Product Manual, Rev. C
2.2
Formatted capacity
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.2.1
LBA mode
When addressing the 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
.
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.
2.3
Default logical geometry
LBA mode
When addressing the 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
.
2.4
Recording and interface technology
Model
Formatted
capacity*
Guaranteed
sectors
Bytes per sector
ST3250310CS
250 Gbytes
488,397,168
512
Cylinders
Read/write heads
Sectors per track
16,383
16
63
Interface
Serial ATA (SATA)
Recording method
Perpendicular
Recording density (kbits/inch max)
1,049
Track density (ktracks/inch avg)
155
Areal density (Gbits/inch
2
avg)
163
Internal data transfer rate (Mbits/sec max)
1,212
Sustained data transfer rate (Mbytes/sec max)
106
I/O data-transfer rate (Mbytes/sec max)
300
