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Seagate Terascale HDD Product Manual, Rev. B 3
www.seagate.com
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.
For details on specification measurement or definition, refer to the appropriate section of this manual.
Standard models Seagate In(SED) models
ST4000NC001 ST4000NC000
Table 1 Drive specifications summary for 3TB, 2TB and 1TB models
Drive Specification*
ST4000NC001
ST4000NC000
Formatted capacity (512 bytes/sector)* 4000GB (4TB)
Guaranteed sectors 7,814,037,168
Heads 8
Disks 4
Bytes per sector 4096 (512 byte emulation)
Recording density, KBPI (Kb/in max) 1807
Track density, KTPI (ktracks/in avg.) 340
Areal density, (Gb/in2 avg) 625
Spindle speed (RPM) 5900
Internal data transfer rate (Mb/s max) 1813
Sustained data transfer rate OD (MiB/s) 130 to 160
I/O data-transfer rate MB/s max) 600
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer 64MB
Height (max) 26.1mm / 1.028 in
Width (max) 101.85mm /4.010 in
Length (max) 147.00mm / 5.787 in
Weight (typical) 606g (1.33 lb)
Average latency
5.1ms
Power-on to ready (sec max) 17.0
Standby to ready (sec max) 17.0
Track-to-track seek time (ms typical)
1.0 read
1.2 write
Average seek, read (ms typical)
Average seek, write (ms typical)
16.0
16.0
Startup current (typical) 12V (peak) 2.0A
Voltage tolerance (including noise)
5V: ± 5%
12V: ± 10%
Temperature gradient (°C per hour max)
20°C (operating)
30°C (non-operating)
Relative humidity
5% to 90% (operating)
5% to 95% (non-operating)
Relative humidity gradient (per hour max) 30%
Altitude, operating
–304.80 m to 3048 m
(–1000 ft to 10,000+ ft)