Toshiba tecra m1 manual inch Hard Disk Drive Hardware Overview, Specifications Items

1.4 2.5-inch Hard Disk Drive 1 Hardware Overview

1.42.5-inch Hard Disk Drive

The removable HDD is a random access non-volatile storage device. It has a non-removable 2.5-inch magnetic disk and mini-Winchester type magnetic heads.

The computer supports a 30GB, 40GB, 50GB and 60GB HDD.

The HDD is shown in figure 1-5. Specifications are listed in Table 1-2.

	Figure 1-5	2.5-inch HDD
Table 1-2 2.5-inch HDD specifications (1/3)
		Specifications
Items	TOSHIBA	TOSHIBA		TOSHIBA	TOSHIBA
	HDD	HDD		HDD	HDD
	2181B	2171B		2186B	2184B
Storage size (formatted)	30GB	40GB		50GB	60GB
Speed (RPM)	4,200	5,400		7,200	5,400
Data transfer speed (Mbits/s)	154.3 - 298.0	200.8 - 333.2		249.4 – 440.5	202.9-373.3
Interface transfer rate (MB/s)			100
Storage density (Kbpi)	618	607		572	632
Track density (Ktpi)	78.9	57.1		74.0	78.9
Average random seek time			12
(read) (ms)
Motor startup time (ms)			4

TECRA M1 Maintenance Manual (960-436) 1-17