When discussing magnetic hard disk drives, technicians often cite the drive's RPM rating. What does the acronym RPM represent?
Random seeks per minute
Reads per minute
Revolutions per minute
Read/write operations per millisecond
RPM stands for "revolutions per minute." It measures how many full turns the drive's platters complete in one minute. A higher platter speed (e.g., 7,200 RPM versus 5,400 RPM) generally lowers average seek latency and can improve sustained read/write throughput.
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