Seagate Kinetic HDD Product Manual, Rev. B
7
2.0
D
RIVE
S
PECIFICATIONS
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power.
For convenience, the phrases
the drive
and
this drive
are used throughout this manual to indicate the following drive
models:
2.1
F
ORMATTED
C
APACITY
Table 1: HDD Capacity Information
*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
R
ECORDING AND
I
NTERFACE
T
ECHNOLOGY
Table 2: Recording and Interface Specifications
2.3
P
HYSICAL
C
HARACTERISTICS
Table 3: Physical Characteristics
Seagate SED model
ST4000NK001
Model
Formatted capacity*
Guaranteed Objects
Bytes per Object
ST4000NK001
4TB
3,906,250
Up to 1024KB
Interface
1-Gbps SGMII Ethernet
Recording method
Perpendicular
Recording density, KBPI (Kb/in max)
1807
Track density, KTPI (ktracks/in avg)
340
Areal density (Gb/in2 avg)
625
Spindle speed (RPM) (± 0.2%)
5900
Internal data transfer rate (Mb/s max)
1813
Sustained data transfer rate (MiB/s)
20 to 60
I/O data-transfer rate (MB/s max)
60
Weight: (maximum)
Kinetic 4TB Model
608g (1.34 lb)
Cache buffer
64MB (67,108,864B)
RAM
512 MB (536,870,912B)
Software-on-Chip
Marvell ARMADA 370
