Hard Drive HDD 3.5" 1TB SATA SEAGATE SERVER ENTERPRISE
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HDD 3.5" 1TB SATA SEAGATE SERVER ENTERPRISE

-Part Number: ST1000NM0055
-Capacity: 1TB
-Series: Enterprise Constellation ES Serial ATA
-Form Factor: 3.5" sata
-Speed: 7200 RPM,128MB Cache,6GB/S

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Description

Drive specification ST2000NM0011 ST1000NM0011 ST500NM0011
ST2000NM0031 ST1000NM0031 ST500NM0031
ST2000NM0051 ST1000NM0051 ST500NM0051
Formatted (512 bytes/sector)* 2TB 1TB 500GB
Guaranteed sectors 3,907,029,168 1,953,525,168 976,773,168
Heads 8 4 2
Discs 4 2 1
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (Kb/in max) 1523
Track density, KTPI (ktracks/in avg.) 237
Areal density, (Gb/in2 avg) 324
Spindle speed (RPM) 7200
Internal data transfer (Mb/s max) 1300
Sustained data transfer rate OD (MB/s max) 152
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
Weight: (maximum) 710g (1.565 lb) 640g (1.411 lb) 610g (1.345 lb)
Average latency 4.16ms
Power-on to ready (sec max) 15 10 7
Standby to ready (sec max) 15 10 7
Track-to-track seek time (ms typical) 0.5 read / 0.8 write
Average seek, read (ms typical) <8.5
Average seek, write (ms typical) <9.5
Startup current (typical) 12V (peak) 2.8A
2.0A (optional configuration through Smart Command Transport)
Voltage tolerance (including noise) 5V � 5% / 12V � 10%
Ambient temperature 5� to 60�C (operating/tested)
�40� to 70�C (nonoperating)
Temperature gradient (�C per hour max) 20�C (operating)
30�C (nonoperating)
Drive specification ST2000NM0011 ST1000NM0011 ST500NM0011
ST2000NM0031 ST1000NM0031 ST500NM0031
ST2000NM0051 ST1000NM0051 ST500NM0051
Relative humidity 5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max
Altitude, operating �60.96 m to 3,048 m (�200 ft to 10,000+ ft)
Altitude, nonoperating �60.96 m to 12,192 m
(below mean sea level, max) (�200 ft to 40,000+ ft)
Operational Shock (max at 2 ms) Read 70 Gs / Write 40 Gs
Non-Operational Shock (max at 2 ms) 300 Gs 350 Gs
Vibration, operating 5�22 Hz: 0.25 Gs, Limited displacement
22�350 Hz: 0.50 Gs
350�500 Hz: 0.25 Gs
Operation Rotational vibration 20�1500Hz: 12.5 rads/s�
Vibration, nonoperating 10�500 Hz: 4.9 Grms ref
Drive acoustics, sound power (bels) 2.7 (typical) 2.2 (typical) 1.9 (typical)
Idle** 2.9 (max) 2.5 (max) 2.3 (max)
Performance seek 3.0 (typical) 2.8 (typical) 2.7 (typical)
3.3 (max) 3.1 (max) 3.0 (max)
Nonrecoverable read errors 1 sector per 1015 bits read
Annualized Failure Rate (AFR) 0.73% based on 8760 POH
Load-unload cycles 300,000 (25�C, 50% rel. humidity) (600,000 design life testing)
Supports Hotplug operation per Yes
Serial ATA Revision 2.6 specification

Data sheet

ST1000NM0055
Data sheet
Capacity
1TB
Model
Entreprise