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SPECIFICATIONS –MK4008GAH (HDD1744) HARD DISK DRIVE
General
Model MK4008GAH (HDD1744)
Interface ATA-6
Functionality
Internal Drive Characteristics
Formatted Capacity 40.0GB*
Rotational Speed 4,200rpm
Avg. Rotational Latency 7.14/ms
Spin-up Time 3.sec (typical)
Buffer 2MB
Seek Time
Average
Maximum
15
26
Internal Transfer Rate 132.6 ~ 230.9 Mbits/sec (max)
Host Transfer Rate
Ultra DMA mode
PIO Mode
100Mbytes/sec
16.6Mbytes/sec
Interleave Factor 1:1
*Toshiba defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes.
Number of Disks 2
Number of Data Heads 4
Track Density (TPI) 4,331 (110k)
Logical Cylinders 16,383
Logical Heads 16
Logical Sectors/track 63
Bytes per Sector 512
Logical Blocks (LBA) 78,126,048
Reliability
Preventative maintenance None
Non-recoverable read errors 1 error per 10
13
bits read
Electrical
Voltage 3.3V 5%
Power Consumption
Start 1.8W typ
Seek 1.1W typ
Read/Write 1.0W typ
Sleep 0.07W typ
Energy Consumption Efficiency 0.0075W/GB avg
Shock
Operating 4,900m/s
2
(500G)(2msec)
Non-Operating 14,700m/s
2
(1500G)(1msec)