Seagate NAS HDD +SRS Product Manual, Rev. C
9
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
Interface
SATA
Recording method
TGMR
Recording density
2TB and 4TB
1807kFCI
Track density (ktracks/inch avg)
2TB
352
4TB
340
Areal density (Gb/in
2
)
2TB and 4TB
625
Internal data transfer rate (Mb/s max)
2TB and 4TB
1813
Maximum sustained data transfer rate, OD read (MB/s)
2TB
159
4TB
180
I/O data-transfer rate (MB/s max)
600
Maximum height
26.11mm / 1.028 in
Maximum width
101.6mm / 4.010 in
Maximum length
146.99mm / 5.787 in
Typical weight
2TB
535g/ 1.18 lb
4TB
610g / 1.345 lb
Cache buffer
64MB
