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PRODUCT DESCRIPTION
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Major HDA ComponentsMajor HDA Components
Major HDA ComponentsMajor HDA Components
Major HDA Components
Drive MechanismDrive Mechanism
Drive MechanismDrive Mechanism
Drive Mechanism
A brush-less DC direct drive motor rotates the spindle at 7,200 RPM (±0.1%). The dynamically balanced
motor/spindle assembly ensures minimal mechanical run-out to the disks. A dynamic brake provides a fast
stop to the spindle motor upon power removal. The speed tolerance includes motor performance and motor
circuit tolerances.
Rotary ActuatorRotary Actuator
Rotary ActuatorRotary Actuator
Rotary Actuator
All DiamondMax Plus 40 drives employ a rotary voice coil actuator which consists of a moving coil, an
actuator arm assembly and stationary magnets. The actuator moves on a low-mass, low-friction center shaft.
The low friction contributes to fast access times and low power consumption.
Read/Write ElectronicsRead/Write Electronics
Read/Write ElectronicsRead/Write Electronics
Read/Write Electronics
An integrated circuit mounted within the sealed head disk assembly (near the read/write heads) provides up
to eight head selection (depending on the model), read pre-amplification and write drive circuitry.
Read/Write Heads and MediaRead/Write Heads and Media
Read/Write Heads and MediaRead/Write Heads and Media
Read/Write Heads and Media
Low mass, low force giant magneto-resistive read/write heads record data on 3.5-inch diameter disks. Maxtor
uses a sputtered thin film medium on all disks for DiamondMax Plus 40 drives.
Air Filtration SystemAir Filtration System
Air Filtration SystemAir Filtration System
Air Filtration System
All DiamondMax Plus 40 drives are assembled in a Class 100 controlled environment. Over the life of the
drive, a 0.1 micron filter and breather filter located within the sealed head disk assembly (HDA) maintain a
clean environment to the heads and disks. DiamondMax 40 drives are designed to operate in a typical office
environment with minimum environmental control.
MicroprocessorMicroprocessor
MicroprocessorMicroprocessor
Microprocessor
The microprocessor controls the following functions for the drive electronics:
Command execution
Cache management
Data correction and error recovery
Diagnostic execution
Data sequencing
Head positioning (including error recovery)
Host interface
Index detection
Spin speed control
Seeks
Servo
S.M.A.R.T.