Control of Sparing in Storage Systems
First Claim
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1. ) A method, comprising:
- measuring a first parameter that includes a response time to perform an input/output (I/O) request;
measuring a second parameter that includes an amount of data spared;
using the first and second parameters to determine at which point in time a copy of data is to be reconstructed after a disk fails in a disk array of a storage system.
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Abstract
Embodiments include methods, apparatus, and systems for controlling of sparing in a storage system. In one embodiment, a method compares a first amount of time to complete sparing of data from a failed disk in a storage system with a second amount of time to complete a user request to the storage system in order to determine when to create a copy of the data from the failed disk.
20 Citations
20 Claims
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1. ) A method, comprising:
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measuring a first parameter that includes a response time to perform an input/output (I/O) request; measuring a second parameter that includes an amount of data spared; using the first and second parameters to determine at which point in time a copy of data is to be reconstructed after a disk fails in a disk array of a storage system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. ) A computer readable medium having instructions for causing a computer to execute a method, comprising:
comparing a first interval of time to complete sparing of data from a failed disk in a storage system against a second interval of time to complete a user request to the storage system in order to determine when to create a copy of the data from the failed disk. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. ) A storage system, comprising:
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a memory for storing an algorithm; a processor for executing the algorithm to; utilize plural parameters to determine when to reconstruct data after a disk fails in a disk array of the storage system, wherein the plural parameters include a response time to perform a user request and an amount of data spared. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification