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1.4 2.5-inch Hard Disk Drive 1 Hardware Overview
TECRA M1 Maintenance Manual (960-436) 1-19
1.4 2.5-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
HDD
2181B
TOSHIBA
HDD
2171B
TOSHIBA HDD
2186B
TOSHIBA
HDD
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
(read) (ms)
12
Motor startup time (ms) 4