Hard Disk Drive Never Die.

Architecture Calculator

Model the
memory layer.

250 MB/s per sensor. 500,000 tracks. See what more sensors around the platter could add.

One track.
More sensors.

Fixed baseline · one platter surface
Platter size
3.5-inch
Tracks per surface
500,000
Speed per sensor
250 MB/s

Track count varies by drive. This model assumes roughly 500,000 tracks over a 25.4 mm recording band.

×

One sensor per track at each circumferential position. Increase the count to add more positions around the platter.

250 MB/s × 500,000 tracks

125 TB/s × 1

Base bandwidth × sensors around each track

Ideal aggregate sensor bandwidth, assuming all sensors read in parallel. Read electronics, power, shared data, and interface limits determine usable throughput.