3.5.Reliabilites
3.5.1.Error Rate
(1)Hard Read Error Rate (Byte Error Rate)
Mode
(2) Seek Error Rate | |
(default) |
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3.5.2. MTBF | 60,000 h |
Assumptions: Power On Hours | 5,436 h/year |
On/Off Cycles | 313 cycles/year |
Number of Access | 600,000 accesses/year |
Operating Duty Cycle (Read) | 20 % of Power On Time (Reading/Seeking) |
Operating Duty Cycle (Write) | 2 % of Power On Time (Writing/Seeking) |
3.5.3. MTTR | 0.5 h |
3.5.4. Drive Life | 15,000 h or 5 years (earlier one) |
(1) Drawer Load/Release | 10,000 times or more |
(2) Interface connector Attach/Detach | 500 times or more |
4. Configuration |
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See Figure 4 for details of the configurations |
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4.1.Electrical Circuits
(1)Drawer Release Switch and Release Detection Switch
(2)Optical Pickup Servo Drive Circuit
(3)Feed Motor Drive Circuit
(4)Laser Diode Control Circuit
(5)EFM Demodulator, Error Correction Circuit and DA converter
(6)IDE/ATAPI Control and
(7)CIRC Encoder
(8)EFM Encoder
(9)ATIP Demodulator
(10)Disc Moter Control Circuit
4.2. Optical Pickup | Semiconductor Laser |
4.3. Spindle Motor | Brushless DC Motor |
4.4. Feed Motor | DC Motor |
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