Vintage Seagate ST 251-1 43MB 5.25" Hard Drive
As is and untested. Refer to photos. the photos are of the actual item you will receive. it has the faceplate on it.
UNFORMATTED CAPACITY (MB) ________________51.2 FORMATTED CAPACITY (17 SECTORS) (MB) _____42.8 ACTUATOR TYPE ____________________________STEPPER TRACKS CYLINDERS ________________________________820 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________83,640 TPI (TRACKS PER INCH) ____________________777 BPI (BITS PER INCH) ______________________9,935 AVERAGE ACCESS (ms) ______________________40/28* SINGLE TRACK SEEK (ms) ___________________8 MAX FULL SEEK (ms) _______________________ /70 MTBF (power-on hours) ____________________100,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0/2.5* +12V TYPICAL (amps) __0.5 +5V TYPICAL (amps) ___1.0/1.2* TYPICAL (watts) ______11/12* MAXIMUM (watts) ______29/36* BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (821) REDUCED WRITE CURRENT (cyl) ______________N/A (821) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________44, 40, or 3** *ST251-0/ST251-1 **MAY REQUIRE PARTITIONING SOFTWARESeagate reserves the right to change, without notice, productofferings or specifications. (6/26/90)