20 MB Internal Hard Drive (250-1041) Specifications Faxback Doc. # 4958 MANUFACTURER: Seagate FORMATTED CAPACITY: MODEL: ST-225 MEGABYTES/DRIVE: 21.4 HEADS: 4 BYTES/TRACK: 8704 CYLINDERS: 615 BYTES/SECTOR: 512 DISKS: 2 TRACKS: 2460 DIMENSIONS: 5 1/4 Half Height TRANSFER RATE: 5 MB/sec ROTATING SPEED: 3600 RPM AVERAGE LATENCY: 8.33 msec ENCODING METHOD: MFM TRACK TO TRACK SEEK TIME: 20 msec MTBF: 20,000 POH AVERAGE ACCESS TIME: 65 msec (css 07/29/93)