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:
Jun. 13, 2017
Filed:
Mar. 15, 2013
Hitachi, Ltd., Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A computer system includes a server that issues an access request with a virtual volume among the plurality of virtual volumes allocated in a plurality of storage apparatuses as an access target and measures a latency in each access path connecting each storage apparatus and the server, and a plurality of control units which are disposed in each storage apparatus and control the I/O of data. Among the plurality of control units, a main control unit that controls the migration of a migration source virtual volume selects, as a migration destination storage apparatus, one storage apparatus connected to an access path from which was obtained a second measured value, which is a measured value that is smaller than a first measured value indicating a latency in an access path connecting a migration source storage apparatus, which includes the migration source virtual volume, and the server, and indicates a latency in an access path connecting a storage apparatus, other than the migration source storage apparatus, and the server, and allocates a migration destination virtual volume in the migration destination storage apparatus.