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[ The PC Guide | Systems and Components Reference Guide | Hard Disk Drives | Hard Disk Performance, Quality and Reliability | Hard Disk Performance | Hard Disk Internal Performance Factors | Controller and Cache Factors ]
Thermal recalibration is a procedure that was at one time commonly employed to correct for shifts in the positions of tracks on drive surfaces as they heated up. It is discussed in this section.
On some older drives, thermal recalibration caused performance problems due to unexpected interruptions for the recalibration to be performed. These primarily affected transfer performance, particularly for users manipulating large files. To combat this problem, manufacturers created special (expensive) drives that did not use thermal recalibration. Fortunately today, this is no longer an issue, since recalibration is not required with today's drives the way it once was.
The most important thing to remember about thermal recalibration today in terms of performance is: don't pay extra for a drive with a big label on it that says "no thermal recalibration!" :^)