(1)Disk
The outer diameter of the disk is 95 mm. The inner diameter is 25 mm. The number of disks used varies with the model, as described below. The disks are rated at over 40,000 start/stop operations.
MPB3021AT: 1 disk
MPB3032AT: 2 disks
MPB3043AT: 2 disks
MPB3052AT: 3 disks
MPB3064AT: 3 disks
(2)Head
The heads are of the contact start/stop (CSS) type. The head touches the disk surface while the disk is not rotating and automatically lifts when the disk starts.
Figure 2.2 illustrates the configuration of the disks and heads of each model. In the disk surface, servo information necessary for controlling positioning and read/write and user data are written. Numerals 0 to 5 indicate read/write heads.
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