Toshiba manual Inch Hard Disk Drives, Specifications, MK2431GAH MK1231GAS MK8031GAS, 8MB

SATA 240/120/80GB

1.8-Inch Hard Disk Drives

Specifications

MK2431GAH	MK1231GAS	MK8031GAS
(HDD1905)	(HDD1813)	(HDD1814)

Series Overview

Performance

Power

Requirements

Dimensions/Weight

Environmental

Acoustics

Interface

Capacity

Number of Platters

Number of Data Heads

RoHS Compatible2

Max Transfer Rate to Host

Media Transfer Rate (max)

Rotational Speed

Average Latency

Buffer4

Track-to-track Seek Time

Average Seek Time

Load/Unload Cycles

Voltage

Energy Consumption Efficiency5

Spin-up

Seeking

Reading

Writing

Active Idle

Low Power Idle

Standby

Sleep

Height

Width

Depth

Weight

Operating Temperature

Non-Operating Temperature

Operating Humidity

Non-Operating Humidity

Operating Vibration

Non-Operating Vibration

Operating Shock

Non-Operating Shock

Idle Mode (Average)

Seek Mode (Average)

Parallel ATA (PATA)	Parallel ATA (PATA)	Parallel ATA (PATA)
240GB1	120GB1	80GB1
2	1	1
4	2	2
Y	Y	Y
100MB/s	100MB/s	100MB/s
488 Mbits/sec	488 Mbits/sec	324 Mbits/sec
4200rpm	4200rpm	4200rpm
7.14	7.14	7.14
8MB	8MB	8MB
3ms	3ms	3ms
15ms	15ms	15ms
600,000	600,000	600,000
3.3V ±5%	3.3V ±5%	3.3V ±5%
0.0013W/GB	0.0025W/GB	0.0038W/GB
1.8watts	1.8watts	1.8watts
0.9watts	0.9watts	0.9watts
0.8watts	0.8watts	0.8watts
0.8watts	0.8watts	0.8watts
0.4watts	0.4watts	0.4watts
0.3watts	0.3watts	0.3watts
0.1watts	0.1watts	0.1watts
0.07watts	0.07watts	0.07watts
0.31” (8mm)	0.2” (5mm)	0.2” (5mm)
2.13” (54mm)	2.13” (54mm)	2.13” (54mm)
2.79” (71.0mm)	3.09” (78.5mm)	3.09” (78.5mm)
2.08 oz (59g)	1.69oz (48g)	1.69oz (48g)
41 - 140°F (5 to 60°)	41 - 140°F (5 to 60°)	41 - 140°F (5 to 60°)
-4 - 148°F (-20 to 65°)	-4 - 148°F (-20 to 65°)	-4 - 148°F (-20 to 65°)
8 - 90% R.H.	8 - 90% R.H.	8 - 90% R.H.
8 - 90% R.H.	8 - 90% R.H.	8 - 90% R.H.
2.0G (15-500 Hz)	2.0G (15-500 Hz)	2.0G (15-500 Hz)
5.0G (15-500 Hz)	5.0G (15-500 Hz)	5.0G (15-500 Hz)
600G/2.0ms	600G/2.0ms	600G/2.0ms
1,500G/1.0ms	1,500G/1.0ms	1,500G/1.0ms
1.4Bels	1.4Bels	1.4Bels
2.0Bels	2.0Bels	2.0Bels

	1.	One Gigabyte (1 GB) means 109 = 1,000,000,000 bytes using powers of 10. A computer
		operating system, however, reports storage capacity using powers of 2 for the definition
		of 1 GB = 230 = 1,073,741,824 bytes, and therefore shows less storage capacity. Avail-
		able storage capacity will also be less if the computer includes one or more pre-installed
		operating systems, pre-installed software applications, or media content. Actual format-
		ted capacity may vary.
	2.	RoHS Compatible: This product is compatible with European Union Directive 2002/95/
		EC. Restriction of the use of certain hazardous substances in electrical and electronic
		equipment (RoHS), which restricts use of lead, cadmium, mercury, hexavalent chro-
		mium, PBB, and PBDE.
	3.	Free of brominated flame retardants (BFR) and polyvinyl chloride (PVC);
		hazardous halogens, antimony trioxide and red phosphorous also eliminated from all
		components in the hard drive.
	4.	Buffer space available to the user.
	5.	Energy consumption efficiency is	calculated based on power consumption divided by
		formatted capacity, as defined by	Japanese law.
	Subject to Change: While Toshiba has made every effort at the time of publication to ensure
	the accuracy of the information provided herein, product specifications, configurations,
	prices, system/component/options availability are all subject to change without notice.
480120-A0	© 2009 Toshiba America Information Systems. All rights reserved.

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