Toshiba SPECIFICATIONS -MK4008GAH HDD1744 HARD DISK DRIVE, General, Functionality, Reliability

SPECIFICATIONS –MK4008GAH (HDD1744) HARD DISK DRIVE

General
Model	MK4008GAH (HDD1744)
Interface	ATA-6
Functionality
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	15
Maximum	26
Internal Transfer Rate	132.6 ~ 230.9 Mbits/sec (max)
Host Transfer Rate
Ultra DMA mode	100Mbytes/sec
PIO Mode	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.

Internal Drive Characteristics

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 1013 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/s2 (500G)(2msec)
Non-Operating	14,700m/s2 (1500G)(1msec)

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