Computer system
AssigneeHitachi, Ltd.
InventorsTakanobu SUZUKI, Akira DEGUCHI, Tsukasa SHIBAYAMA
Life of this patent
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Abstract
In a computer system, in a case where a throughput upper limit value is set as upper limit value 1, a throughput limit notification program executed by a storage device gives a notification to a storage management device when a throughput of a logical volume reaches the upper limit value 1. In response to this notification, a throughput upper limit value setting program executed by the storage management device outputs, to the storage device, a command for switching the throughput upper limit value from the upper limit value 1 to upper limit value 2, such that the throughput upper limit value is switched.
Claims14
A computer system having a processor, a memory, and a storage, and providing a logical volume as a target for inputting and outputting data to and from the storage, the computer system comprising:
- a management unit;
- an I/O processing unit that writes the data into the logical volume and reads the data out of the logical volume within a throughput upper limit value set for each logical volume in response to an I/O request to the logical volume;
- and
- a throughput limit detection unit that detects that a throughput of the logical volume has reached the set throughput upper limit value, wherein
- the management unit manages the throughput upper limit value set for the logical volume based on a plurality of throughput upper limit values including at least a first upper limit value and a second upper limit value greater than the first upper limit value, and
- in a case where the throughput upper limit value is set as the first upper limit value, when the throughput limit detection unit detects that the throughput of the logical volume has reached the first upper limit value, the management unit switches the throughput upper limit value from the first upper limit value to the second upper limit value.
Dependencies are inferred from the claim text.