Data migration with reduced contention and increased speed

Details Data migration with reduced contention and increased speed Data migration with reduced contention and increased speed

2008-07-22

2008-07-22

Sough, Hyung (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S170000

Reexamination Certificate

active

07404039

ABSTRACT:
Methods and apparatus are provided for managing data in a hierarchal storage subsystem. A plurality of volumes is designated as a storage group for Level 0 storage; a threshold is established for the storage group; space is allocated for a data set to a volume of the storage group; the data set is stored to the volume; the threshold is compared with a total amount of space consumed by all data sets stored to volumes in the storage group. Data sets are migrated from the storage group to a Level 1 storage if the threshold is less than or equal to the total amount of space used by all of the data sets stored to volumes in the storage group. Thus, contention between migration and space allocation is reduced.

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patent: 5333315 (1994-07-01), Saether et al.
patent: 6330572 (2001-12-01), Sitka
patent: 2004/0054656 (2004-03-01), Leung et al.
IBM (1973) Technical Disclosure Bulletin.
IBM (1985) Technical Disclosure Bulletin.

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