Western Digital 250GB JB 8MB CACHE 7200RPM EIDE Price in Pakistan

Description

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Western Digital 250GB JB 8MB CACHE 7200RPM EIDE Price in Pakistan Details:

Western Digital 250GB JB 8MB CACHE 7200RPM EIDE

Specifications

* Rotational Speed 7,200 RPM (nominal)
* Buffer Size 8 MB
* Average Latency 4.20 ms (nominal)
* Contact Start/Stop Cycles 50,000 minimum

Seek Times

* Read Seek Time 8.9 ms
* Write Seek Time 10.9 ms (average)
* Track-To-Track Seek Time 2.0 ms (average)
* Full Stroke Seek 21.0 ms (average)

Transfer Rates

* Buffer To Disk 748 Mbits/s (Max)
* Buffer to Host (EIDE)
* Mode 5 Ultra ATA 100.0 MB/s
* Mode 4 Ultra ATA 66.6 MB/s
* Mode 2 Ultra ATA 33.3 MB/s
* Mode 4 PIO 16.6 MB/s
* Mode 2 multi-word DMA 16.6 MB/s

Physical Specifications

* Formatted Capacity 250,059 MB
* Capacity 250 GB
* Interface EIDE 100 MB/s
* User Sectors Per Drive 488,397,168

Physical Dimensions

English

* Length 5.787 Inches (Max)
* Width 4.00 Inches (+/- 0.010 inch)
* Weight 1.32 Pounds

Metric

* Height 26.1 mm (Max)
* Length 147 mm (Max)
* Width 101.6 mm
* Weight 0.60 kg

Environmental Specifications

Shock

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

Acoustics

* Idle Mode 28 dBA (average)
* Seek Mode 0 33 dBA (average)
* Seek Mode 3 29 dBA (average)

Temperature (English)

* Operating 41? F to 131? F
* Non-operating -40? F to 149? F

Temperature (Metric)

* 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 (English)

* Operating -1,000 feet to 10,000 feet
* Non-operating -1,000 feet to 40,000 feet

Altitude (Metric)

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

Vibration

Operating

* Linear 20-300 Hz, 0.75G (0 to peak)
* Random 10-300 Hz, 0.004 g? / 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 530 mA
* Idle 510 mA
* Standby 30 mA
* Sleep 30 mA
* 5 VDC
* Read/Write 450 mA
* Idle 400 mA
* Standby 150 mA
* Sleep 120 mA

Power Dissipation

* Read/Write 8.60 Watts
* Idle 8.10 Watts
* Standby 1.10 Watts
* Sleep 1.00 Watts