Seagate BarraCuda Product Manual, Rev. B
8
Drive Specifications
2.2
Formatted capacity
*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
2.5
Physical characteristics
Model
Formatted capacity*
Guaranteed sectors
Bytes per sector
4TB
4000GB
7,814,037,168
4096
Interface
SATA
Recording method
TGMR
Recording density
2054kFCI
Track density
(ktracks/inch avg)
390
Areal density
(Gb/in
2
)
811
Internal data transfer rate
(Mb/s max)
2111
Maximum sustained data transfer rate, OD read
(MB/s) 190
Average data rate, read/write
(MB/s)
161
I/O data-transfer rate
(MB/s max)
600
Maximum height
26.1mm / 1.028 in
Maximum width
101.6mm / 4.0 in (± 0.010 in)
Maximum length
146.99mm / 5.787 in
Typical weight
635g / 1.400 lb
Cache buffer
64MB
