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- UNIVAC_FASTRAND abstract "FASTRAND was a magnetic drum mass storage system built by Sperry Rand Corporation for their UNIVAC 1100 series and 490/494 series computers.A voice coil actuator moved a bar containing multiple single track recording heads, so these drums operated much like moving head disk drives with multiple disks. The heads "flew" on self-acting hydrodynamic air bearings. The drums had a plated magnetic recording film.The Fastrands were very heavy (5,000 pounds) and large, approximately 6' long. They required special rigging and mounts to install. At the time of their introduction the storage capacity exceeded any other random access mass storage disk or drum.There were three models of FASTRAND drives: FASTRAND I had a single drum. The large mass of the rotating drum caused gyroscopic activity in the unit, making it tend to spin on the computer room floor as the Earth rotated under it. Very few of these devices were delivered. FASTRAND II (the majority of units produced) had two counter-rotating drums to eliminate the gyroscopic instability. One actuator bar with heads was located between the drums. FASTRAND III, introduced in 1970, was physically identical to the FASTRAND II, but increased the recording density by 50%.".
- UNIVAC_FASTRAND thumbnail Cylinder_Head_Sector.svg?width=300.
- UNIVAC_FASTRAND wikiPageExternalLink fastrand.html.
- UNIVAC_FASTRAND wikiPageID "201122".
- UNIVAC_FASTRAND wikiPageRevisionID "521122931".
- UNIVAC_FASTRAND hasPhotoCollection UNIVAC_FASTRAND.
- UNIVAC_FASTRAND subject Category:UNIVAC_hardware.
- UNIVAC_FASTRAND subject Category:UNIVAC_storage_devices.
- UNIVAC_FASTRAND type Artifact100021939.
- UNIVAC_FASTRAND type Device103183080.
- UNIVAC_FASTRAND type Instrumentality103575240.
- UNIVAC_FASTRAND type MemoryDevice103744840.
- UNIVAC_FASTRAND type Object100002684.
- UNIVAC_FASTRAND type PhysicalEntity100001930.
- UNIVAC_FASTRAND type UNIVACStorageDevices.
- UNIVAC_FASTRAND type Whole100003553.
- UNIVAC_FASTRAND comment "FASTRAND was a magnetic drum mass storage system built by Sperry Rand Corporation for their UNIVAC 1100 series and 490/494 series computers.A voice coil actuator moved a bar containing multiple single track recording heads, so these drums operated much like moving head disk drives with multiple disks. The heads "flew" on self-acting hydrodynamic air bearings. The drums had a plated magnetic recording film.The Fastrands were very heavy (5,000 pounds) and large, approximately 6' long.".
- UNIVAC_FASTRAND label "UNIVAC FASTRAND".
- UNIVAC_FASTRAND sameAs m.01ckpg.
- UNIVAC_FASTRAND sameAs Q7865337.
- UNIVAC_FASTRAND sameAs Q7865337.
- UNIVAC_FASTRAND sameAs UNIVAC_FASTRAND.
- UNIVAC_FASTRAND wasDerivedFrom UNIVAC_FASTRAND?oldid=521122931.
- UNIVAC_FASTRAND depiction Cylinder_Head_Sector.svg.
- UNIVAC_FASTRAND isPrimaryTopicOf UNIVAC_FASTRAND.
