A volume group 4 consists of a plurality of volume subgroups 41 to 4n. For example, volume subgroup 41 includes volumes 41-1 to 41-a on electronic disk units, and volume subgroup 4n includes volumes 4n-1 to 4n-d on magnetic disk units. Prioritized volume subgroups Table 5 for temporary file allocation...http://www.google.fr/patents/US5440737?utm_source=gb-gplus-shareBrevet US5440737 - File-allocation control system for allocating files according to user-program priority and storage volume performance
File-allocation control system for allocating files according to user ...
