Toshiba satellite a20 series 사용자 설명서
1 Hardware Overview
1.3 2.5-inch Hard Disk Drive
1.3 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, 60GB or 80GB HDD.
The HDD is shown in figure 1-4. The specifications are listed in table 1-1.
2.5-inch magnetic disk and mini-Winchester type magnetic heads. The computer supports a
30GB, 40GB, 60GB or 80GB HDD.
The HDD is shown in figure 1-4. The specifications are listed in table 1-1.
Figure 1-4 2.5-inch HDD
Table 1-1 2.5-inch HDD specifications (1/3)
Specifications
Parameter
TOSHIBA
HDD2181B
TOSHIBA
HDD2182B
TOSHIBA
HDD2171B
TOSHIBA
HDD2183B
TOSHIBA
HDD2184B
Storage size (formatted)
30 40
60
Speed (RPM)
4.200 5.400
4.200
5.400
Data transfer speed (Mbits/s)
154.3 – 298.0
200.8 –
333.2
154.3 –
298.0
202.9 –
373.3
Interface transfer rate (MB/s)
100
Storage density (Kbpi)
618 607
618
632
Track density (Ktpi)
78.9 57.1 78.9
Average random seek time
(read) (ms)
(read) (ms)
12
Average random seek time
(write) (ms)
(write) (ms)
-
Motor start up time (ms)
4
1-14
Satellite A20 Maintenance Manual (960-444)