The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2001
Filed:
Jul. 21, 1995
EMC Corporation, Hopkinton, MA (US);
Abstract
A method of controlling distribution of processing in a system that includes a plurality of host data processors connected to a data storage system which includes a digital storage that is partitioned into a plurality of volumes. The method includes assigning ownership of the volumes to the host processors such that each of the host processors owns a different subset of the plurality of volumes, wherein a host processor is prohibited from sending I/O requests to any of the volumes which it does not own. The method further includes monitoring the I/O requests that are sent to each of the volumes by each of the host processors; from information obtained through monitoring, generating workload statistics indicative of the distribution of workload among the host processors; detecting a workload imbalance in the workload statistics; and in response to detecting a workload imbalance, reassigning ownership of the volumes to the host processors so as to change the distribution of workload among the host processors.