FILE ALLOCATION SYSTEM FOR MZR SYSTEM MAGNETIC DISK DEVICE

摘要

PURPOSE: To provide an efficient high-performance information processing system which has uniform disk performance on an average by determining an allocation position for the MZR system magnetic disk device by the data management part of a basic OS part according to the size of a file when the file is secured. ;CONSTITUTION: At the time of initialization by the data management part 4 of the basic OS part 2, various disk elements (storage capacity per cylinder) are obtained from the MZR system magnetic disk device 10 which is connected and registered in a file size classified cylinder address table 6. When there is no object file at the time of file I/O, a file securing function 5 retrieves a cylinder (zone) matching requested file size and sets a file area in the zone.;COPYRIGHT: (C)1996,JPO