Твърд диск 320GB, WD, refurbished, SATA2, 7200rpm, 8MB

320GB WD

Performance Specifications
Rotational Speed 7,200 RPM (nominal)
Buffer Size 8 MB
Average Latency 4.20 ms (nominal)

Seek Times
Read Seek Time 8.9 ms
Track-To-Track Seek Time 2.0 ms (average)
Full Stroke Seek 21.0 ms (average)

Transfer Rates
Buffer To Host (Serial ATA) 300 MB/s (Max)
Buffer To Disk 748 Mbits/s (Max)

Physical Specifications
Formatted Capacity 320,072 MB
Capacity 320 GB
Interface SATA 300 MB/s
User Sectors Per Drive 625,142,448

Physical Dimensions

Height 26.1 mm (Max)
Length 147 mm (Max)
Width 101.6 mm
Weight 0.6 kg

Environmental Specifications

Shock
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 250G, 2 ms

Acoustics
Idle Mode 26 dBA (average)
Seek Mode 0 31 dBA (average)
Seek Mode 3 27 dBA (average)

Temperature
Operating 5° C to 55° C
Non-operating -40° C to 65° C

Humidity
Operating 5-95% RH non-condensing
Non-operating 5-95% RH non-condensing

Altitude
Operating -305M to 3,050M
Non-operating -305M to 12,200M

Vibration
Operating
Linear 20-300 Hz, .75G (0 to peak)
Random 10-300 Hz, 0.004 g² / Hz

Non-operating
Low Frequency 5-20 Hz, 0.195 inches (double amplitude)
High Frequency 20-500 Hz, 4.0G (0 to peak)

Electrical Specifications

Current Requirements

12 VDC
Read/Write 450 mA
Idle 430 mA
Standby 20 mA
Sleep 20 mA

5 VDC
Read/Write 800 mA
Idle 730 mA
Standby 270 mA
Sleep 250 mA

Power Dissipation
Read/Write 9.50 Watts
Idle 8.75 Watts
Standby 1.60 Watts
Sleep 1.50 Watts

JAR Computers може да предложи ремонт/смяна/монтаж в наш сервиз или при партньор.

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