System and method for quality of service management in a partitioned storage device or subsystem
AssigneeStorage Technology Corporation
InventorsGeorge Rudeseal, Robert Walsh, Stephen Selkirk
Life of this patent
Estimating the term…
Abstract
A direct access storage system includes at least one disk and a controller. The at least one disk physically may be partitioned into at least one first access performance partition and at least one other access performance partition. The controller may be configured to process I/O accesses to the first access performance partition without regulation and regulate I/O accesses to the at least one other access performance partition.
Claims21
1-20. (canceled)
A direct access storage system comprising:
- a disk physically partioned into a first access performance partition and an other access performance partition, wherein the first access performance partition is a high level performance partition compared to the other access performance partition;
- and
- a controller configured to process I/O accesses to the first access performance partition and regulate I/O accesses to the other access performance partition.
A method of ensuring I/O access performance in a direct access storage system, the method comprising:
- physically partitioning a disk into a first performance partition and an other access performance partition;
- processing I/O accesses to the first access performance partition;
- determining an access rate for the first access performance partition;
- and
- regulating I/O accesses to the other access performance partition in response to the access rate of the first access performance partition.
For use in a direct access storage system, a controller comprising:
- first access performance virtual partitions;
- an other access performance virtual partition;
- and
- a governor configured to process I/O accesses to the first access performance partitions and regulate I/O accesses to the other access performance partition.
Dependencies are inferred from the claim text.