Seagate Surveillance HDD Product Manual, Rev. A
6
www.seagate.com
Drive Specifications
2.2
Formatted capacityy
*One GB equals one billion bytes and 1TB equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending
on operating environment and formatting.
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 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-bit
addressing support of drives with capacities over 137GB.
2.3
Default logical geometry
•
Cylinders
: 16,383
•
Read/write heads
: 16
•
Sectors per track
: 63
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
.
2.4
Recording and interface technology
Model
Formatted
capacity*
Guaranteed
sectors
Bytes per sector
ST4000VX000
4000GB
7,814,037,168
4K
ST3000VX002
3000GB
5,860,533,168
Interface
SATA
Recording method
TGMR
Recording density
4TB
1807kFCI
3TB
1550kFCI
Track density
(ktracks/inch avg)
340
Areal density
(Gb/in
2
)
4TB
625
3TB
536
Internal data transfer rate
(Mb/s max)
1813
Maximum sustained data transfer rate, OD read
(MB/s) 180
I/O data-transfer rate
(MB/s max)
600
