Western Digital 40GB SATA Hard Disks WD400BD
Buffer Size : 2 MB
Average Latency : 4.20 ms (nominal)
Contact Start/Stop Cycles : 50,000 minimum
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)
Buffer To Host (Serial ATA) : 300 MB/s (Max)
Buffer To Disk : 748 Mbits/s (Max)
Formatted Capacity : 40,020 MB
Capacity : 40 GB
Interface : SATA 300 MB/s
User Sectors Per Drive : 78,165,360
Height : 1.028 Inches (Max)
Length : 5.787 Inches (Max)
Width : 4.00 Inches (+/- 0.010 inch)
Weight : 1.60 Pounds
Operating Shock (Read) : 65G, 2 ms
Non-operating Shock : 350G, 2 ms
Idle Mode : 30 dBA (average)
Seek Mode 0 : 32 dBA (average)
Seek Mode 3 : 31 dBA (average)
Operating : 41° F to 131° F
Non-operating : -40° F to 149° F
Linear : 10-300 Hz, 3.0G (0 to peak)
Random : 10-300 Hz, 0.008 g² / Hz
Low Frequency : 5-20 Hz, 0.195 inches (double amplitude)
High Frequency : 20-300 Hz, 4.0G (0 to peak)
Read/Write : 450 mA
Idle : 470 mA
Standby : 23 mA
Sleep : 23 mA


