WESTERN DIGITAL HDD 40GB 7200RPM ATA100 2MB  Cool, Quiet, Reliable 40 GB, 7200 RPM Hard Drive WD Caviar 7200 RPM EIDE hard drives are offered in capacities up to 250 GB, with performance geared to advanced and mainstream desktop personal computers. WD Caviar drives are built to the highest standards of quality and reliability because we understand the importance of the data that is entrusted to our products. - Warranty Information: 90 DAYS DOA SED; 3 YR EXG RPR OR RPL MFG -------------------------------------------------------------------------------- Product Specifications: Performance Specifications
Rotational Speed 7,200 RPM (nominal)
Buffer Size 2 MB
Average Latency 4.20 ms (nominal)
Contact Start/Stop Cycles 40,000 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 400 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
Recommended Configuration Parameters
Cylinders 16,383
Number of Heads (Logical) 16
Number of Heads (Physical) 4
Sectors Per Track 63
Physical Specifications
Formatted Capacity 40,021 MB
Capacity 40 GB
Interface EIDE
Actuator Type Rotary Voice Coil
Number of Platters 2
Bytes Per Sector 512
User Sectors Per Drive 78,165,360
Servo Type Embedded
Physical Dimensions
English Height: 1.028 Inches (Max)
cheap hotels in EskilstunaLength: 5.787 Inches (Max)
Width: 4.00 Inches (+/- 0.010 inch)
Weight: 1.32 Pounds (+/- .10 lb)
Metric Height: 26.1 mm (Max)
Length: 147 mm (Max)
Width: 101.6 mm
Weight: 0.6 kg (+/- .082 kg)
Environmental Specifications
Shock Operating Shock (Read): 65G, 2ms
Non-operating Shock: 250G, 2 ms
Acoustics Idle Mode: 30 dBA (average)
Seek Mode 0: 32 dBA (average)
Seek Mode 3: 31 dBA (average)
Temperature (English) Operating: 41° F to 131° F
Non-operating: -40° F to 140° F
Temperature (Metric) Operating: 5° C to 55° C
Non-operating: -40° C to 60° C
Humidity Operating: 5-85% 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
barcelohotel SopotVibration - Operating Linear: 5-500 Hz, 0.25G (0 to peak)
Random: 10-300 Hz, 0.004 g² / Hz
Vibration - 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: 350 mA
- Idle: 340 mA
- Standby: 25 mA
- Sleep: 25 mA
5 VDC
- Read/Write: 630 mA
- Idle: 610 mA
- Standby: 190 mA
- Sleep: 80 mA
Power Dissipation
- Read/Write: 7.50 Watts
- Idle: 7.10 Watts
- Standby: 1.30 Watts
- Sleep: 0.70 Watts -------------------------------------------------------------------------------- Product Features: Fast 7200 RPM, 2 MB cache buffer
EIDE (Ultra ATA/100) - Up to 100 MB/s burst transfer rates.
Fluid Dynamic Bearing (FDB) technology - improves hard drive reliability; reduces heat, vibration, and noise.
Data Lifeguard is a set of data protection features that include shock protection, an environmental protection system, and embedded error detection and repair features that automatically find, isolate, and repair problem areas that may develop over the extended use of the hard drive.
Data Lifeguard Tools is a set of software utilities that work in conjunction with the embedded Data Lifeguard features to make hard drive installation, drive management diagnostics, and repair simple and worry-free.
Shock Guard provides outstanding improvements in shock and vibration protection for WD Caviar drives. Shock Guard allows instantaneous data protection at high shock values to achieve leading shock specifications.
price 49.95
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