T4900CT
1.4 2.5-inch Hard Disk Drive
The Hard Disk Drive (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.
T4900CT supports 810 MB HDD. The T4900CT HDD is shown in figure 1-5. Specifica-
tions for the HDD are described in table 1-2.
Figure 1-5 2.5-Inch HDD
Table 1-2 2.5-Inch HDD specifications
810MB
DVAA-2810
Physical specifications
Formatted capacity (MB) 810.0
Disks 3
Heads 6
Cylinders 1,571
Bytes per sector (bps) 512
Cording 1-7RLL
Performance specifications
Access time (average) 14.5
(track to track) 4
Maximum stroke 23.5
Rotation speed (rpm) 3,800
Data transfer rate (Mbps) 24.9 to 36.0
Power requirement
DC voltages (V) +5 only
Power (typical)
Seek (W) 2.8
Read (W) 2.8
Write (W) 2.8
Standby mode
(Spin only) (W) 0.4
Sleep mode
(Motor off) (W) 0.4
Spin-up mode (mA) 940
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