Enterprise-class versus Desktop-class Hard Drives

Enterprise-class versus Desktop-class Hard Drives
Revision 1.0
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Figure 1: RV Compensation Feedback Mechanisms
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Data
Typical Feedback Controller
AF002543
No RV Compensation (Desktop-class drive)
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Data
Typical Feedback Controller
AF002544
RV Sensors
RV Compensation (Enterprise-class drive)
Desktop class drives have less sophisticated mechanisms to compensate for vibration induced
errors, which causes greater performance loss and a higher error rate. Enterprise class drives
are able to more effectively detect and compensate for vibration.
Symptoms of vibration related errors include lower drive performance, a larger number of
logged medium errors, and an increased frequency of drives marked offline by the I/O controller.
In addition, data corruption has been observed in high vibration environments with some drive
models.