Name: Твърд диск 1TB HITACHI Ultrastar™ A7K2000, SATA2, 7200rpm, 32MB, 3.5 (8.89 cm)
Brand: Hitachi
SKU: HDD1THITUSTRA7K2000
Availability: OutOfStock

Описание Характеристики Ревюта / Въпроси

Ultrastar™ A7K2000
3.5-Inch Enterprise 7200 RPM
Hard Disk Drives

The Ultrastar A7K2000 delivers up to 1TB of storage capacity in a standard 3.5 form factor, filling a vital need for high-density storage in the enterprise. With a unique 5-platter design, Hitachi has relaxed the bit densities to achieve higher reliability. The Ultrastar A7K2000 is built using the industry s most reliable perpendicular magnetic recording recording heads and media. The Ultrastar A7K2000 features a 3 Gb/s SATA interface supporting key features in the Serial-ATA specification including Native Command Queuing , staggered spin-up and hot-swap capability

Configuration

Interface SATA 3Gb/s
Capacity (GB) at 512 bytes/sector 1TB
Sector size (bytes) 512
Max. areal density (Gbits/sq. in) 2TB 285

Performance

Data buffer (MB) 32
Rotational speed (RPM) 7200
Interface transfer rate (MB/s, max) 300
Sustained transfer rate (MB/s, typical) 134
Seek time (read, ms, typical) 2TB 8.2

Reliability

Error rate (non-recoverable, bits read) 1 in 10
Load/unload cycles (at 40° C) 300,000
Availability2 (hrs/day x days/wk) 24x7
MTBF2 (M hours) 1,200,000

Acoustics

Idle (Bels, typical) 2TB 2.9

Power

Requirement +5 VDC (+/-5%), +12 VDC (+10%/-8%)
Startup current (A, max.) 2.0 (+12V), 1.2 (+5V)
Read/write (W) 2TB 11.1
Unload idle (W) 2TB 5.6
Power consump. efficiency index (W/GB) 0.0039

Physical size

z-height (mm) 26.1
Dimensions (width x depth, mm) 101.6 (+/-0.25) x 147
Weight (g, max) 2TB 740

Environmental (operating)

Ambient temperature 5o to 60o C
Shock (half-sine wave, G) 70
Vibration (G RMS, 5 to 500 Hz) 0.67 (XYZ)

Environmental (non-operating)

Ambient temperature -40o to 70o C
Shock (half-sine wave, 1ms, G) 2TB 300

http://www.hgst.com/tech/techlib.nsf/techdocs/5EDA5472B7792D9D8625760A0003E88B/$file/UltraStarA7K2000_datasheet.pdf

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