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Seagate Kinetic HDD Product Manual, Rev. A 7
2.0 DRIVE SPECIFICATIONS
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 FORMATTED CAPACITY
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 RECORDING AND INTERFACE TECHNOLOGY
Table 2: Recording and Interface Specifications
2.3 PHYSICAL CHARACTERISTICS
Table 3: Physical Characteristics
Seagate SED model
ST4000NK0001
Model Formatted capacity* Guaranteed Objects Bytes per Object
ST4000NK0001 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/in
2
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: ( m a x i mu m )
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