Seagate ST4000DX001 User Manual

Desktop SSHD Product Manual, Rev. B

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

Specification summary tables

The specifications listed in

Table 1

are for quick reference. For details on specification measurement or definition,

refer to the appropriate section of this manual.

ST4000DX001

ST2000DX001

ST1000DX001

Table 1 Drive specifications summary for 4TB, 2TB and 1TB models

Drive Specification*

ST4000DX001

ST2000DX001

ST1000DX001

Formatted capacity (512 bytes/sector)**

4000GB (4TB)

2000GB (2TB)

1000GB (1TB)

Guaranteed sectors

7,814,037,168

3,907,029,168

1,953,525,168

Heads

Disks

NAND flash Commercial Multilevel Cell
(cMLC)/size

cMLC/8GB

Bytes per sector (4K physical emulated at
512-byte sectors)

4096

Default sectors per track

Default read/write heads

Default cylinders

16,383

Recording density (max)

1807kFCI

Track density (avg)

340ktracks/in

352ktracks/in

Areal density (avg)

625Gb/in

Spindle speed

5900 RPM

7200 RPM

Internal data transfer rate (max)

1813Mb/s

2147Mb/s

Average data rate, read/write (MB/s)

146MB/s

156MB/s

Maximum sustained data rate, OD read
(MB/s)

180MB/s

210MB/s

I/O data-transfer rate (max)

600MB/s

Cache buffer

64MB

Height (max)

26.1mm / 1.028 in

20.17mm / 0.7825 in

Width (max)

101.6mm /4.0 in
(+ 0.010 in)

101.6mm /4.0 in
(± 0.010 in)

101.6mm / 4.0 in
( ± 0.010 in)

Length (max)

146.99mm / 5.787 in

Weight (typical)

610g / 1.345 lb

535g / 1.18 lb

400g / 0.88 lb

Average latency

5.1ms

4.16ms

Power-on to ready (max)

‡

<1.0s

<1.0s <1.0s

Standby to ready (max)

‡

<1.0s

<1.0s <1.0s

Average seek, read (typical)
Average seek, write (typical)

<12.0ms typical
<12.0ms typical

<8.5ms (read)
<9.5ms (write)

Startup current 12V

2.0A