1.2 Hardware Structure
(19)Diagnosis
The HDD has a diagnostic capability which checks internal controller functions and drive operations to facilitate testing and repair.
(20)Low power consumption
By using highly integrated LSI components, the power consumption of the HDD is very low, and this enables the unit to be used in wide range of environmental conditions.
(21)Low noise and low vibration
The noise level is low; approx. 3.4 Bels at Ready for the drive. This makes it ideal for office use.
(22)Microcode downloading
The HDD implements the microcode download feature. This feature easily achieves maintenance and function enhancement of the HDD.
1.2Hardware Structure
An outer view of the HDD is given in Figures 1.1. The HDD has a disk enclosure (DE) and a printed circuit assembly (PCA). The DE includes heads on an actuator and disks on a spindle motor mounted on the DE. The PCA includes a read/write circuit and a controller circuit.
Figure 1.1 FC model drives outer view
(1)Disks
The disks have an outer diameter of 84 mm (3.3 inch) and an inner diameter of 25 mm (0.98 inch). The disks are good for at least 50,000 contact starts and stops.
