DISK/TREND REPORT

Five decades of disk drive industry firsts

First disk drive
1956 IBM 350 RAMAC 5 Megabytes, fifty 24" disks

First use of zoned recording
1961 Bryant Computer 4240 90 Megabytes, twenty four 39" disks

First disk drive with air bearing heads
1962 IBM 1301 "Advanced Disk File" 28 Megabytes, twenty five 24" disks

First 14" disk drive and first with removable disk pack
1963 IBM 1311 "Low Cost File" 2.69 Megabytes, six 14" disks

First voice coil actuator, first single disk cartridge drive
1965 IBM 2310 "Ramkit" 1.024 Megabytes, one 14" disk

First disk drive with ferrite core heads
1966 IBM 2314 -- 29.17 Megabytes, eleven 14" disks

First track-following servo system
1971 IBM 3330-1 "Merlin" 100 Megabytes, eleven 14" disks

First flexible disk drive, read-only
1971 IBM 23FD "Minnow" -- .0816 Megabytes, one 8" disk

First flexible disk drive to set industry standard for 8 inch diskettes
1973 IBM 33FD "Igar" -- .156 Megabytes, one 8" disk

First disk drive with low mass heads, lubricated disks, sealed assembly
1973 IBM 3340 "Winchester" 35 or 70 Megabytes, two or four 14 disks

First disk drive with rotary actuator
1975 IBM 62 GV "Gulliver" 5 or 9 Megabytes, one 14" disk

Re-introduction of disk drive with fixed disk media
1976 IBM 3350 "Madrid" -- 317.5 Megabytes, eight 14" disks

First flexible disk drive with two sided recording
1976 IBM 43FD "Crystal" -- .568 Megabytes, one 8" disk

First 5.25 inch flexible disk drive
1976 Shugart Associates SA400 -- .2188 Megabytes, one 5.25" disk

First disk drive with thin film heads, and 2,7 encoding
1979 IBM 3370 "New File Project" 571.4 Megabytes, seven 14" disks

First 8 inch rigid disk drive
1979 IBM 62PC "Piccolo" 64.5 Megabytes, six 8" disks

First 10.5 inch rigid disk drive
1981 Fujitsu F6421 "Eagle" 446 Megabytes, six 10.5" disks

First 5.25 inch rigid disk drive
1980 Seagate Technology ST506 5 Megabytes, four 5.25" disks

First 3.5 inch flexible disk drive
1981 Sony OA-D3OV -- .4375 Megabytes, one 3.5" disk

First 3.5 inch rigid disk drive
1983 Rodime RO 352 10 Megabytes, two 3.5" disks

First 9 inch rigid disk drive
1982 Control Data 9715-160 "FSD" 150 Megabytes, six 9" disks

First 8 disk 5.25 inch disk drive, with in-hub motor
1983 Maxtor XT-1140 126 Megabytes, eight 5.25" disks

First 8.8 inch rigid disk drive
1984 Hitachi DK815-5 460 Megabytes, eight 8.8" disks

First disk drive mounted on card
1985 Quantum Hardcard 10.5 Megabytes, one 3.5" disk

First voice coil actuator 3.5" disk drive
1986 Conner Peripherals CP340 40 Megabytes, two 3.5" disks

First one inch high 3.5" disk drive
1988 Conner Peripherals CP3022 21 Megabytes, one 3.5" disk

First 2.5 inch disk drive
1988 PrairieTek 220 20 Megabytes, two 2.5" disks

First 9.5 inch rigid disk drive
1988 Hitachi DKU-86i 1,890 Megabytes, eight 9.5" disks

First disk drive with PRML encoding
1990 IBM 0681 "Redwing" 857 Megabytes, twelve 5.25" disks

First disk drive using magnetoresistive heads
1991 IBM 0663 "Corsair" 1,004 Megabytes, eight 3.5" disks

First 1.8 inch disk drive
1991 Integral Peripherals 1820 "Mustang" 21.4 Megabytes, one 1.8" disk

First 1.8 inch PC Card disk drives
1992 Integral Peripherals 1841PA "Ranger" 42.5 Megabytes, one 1.8" disk

First 1.3 inch disk drive
1992 Hewlett-Packard C3013A "Kittyhawk" 21.4 Megabytes, two 1.3" disks

First 7,200 RPM disk drive
1993 Seagate Technology ST12550 "Barracuda" 2,139 Megabytes, ten 3.5" disks

First 6.5" rigid disk drive
1993 Hitachi H-6588-314 2,920 Megabytes, eight 6.5" disks

First 3 inch rigid disk drive
1995 JTS N0640-2AR 641.7 Megabytes, two 3" disks

First embedded servo flexible disk drive
1995 Iomega Zip 100 100 Megabytes, one 3.5" disk

First drive using giant magnetoresistive heads
1997 IBM Deskstar 16GP "Titan" 16,800 Megabytes, five 3.5" disks

First 10,000 RPM disk drive
1997 Seagate Technology ST19101 "Cheetah 9" 9,100 Megabytes, eight 3.5" disks

First 10,000 RPM drive with 3 inch disks
1998 Seagate Technology ST118202 "Cheetah 18" 18,200 Megabytes, twelve 3" disks

First 12,000 RPM disk drive
1998 Hitachi DK3E1T-91 9,200 Megabytes, nine 2.5" disks

First one inch disk drive
1999 IBM "Microdrive" 340 Megabytes, one 1" disk

First 15,000 RPM disk drive
2000 Seagate Technology ST318451 "Cheetah X15" 18,350 Megabytes, three 2.5" disks