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:
Oct. 04, 2022
Filed:
Jun. 22, 2021
International Business Machines Corporation, Armonk, NY (US);
Timothy Andrew Moran, Southampton, GB;
Christopher Bulmer, Kings Worthy, GB;
Christopher Canto, Winchester, GB;
Warren Hawkins, Winchester, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A migration replication relationship for data migration between a migration-source volume on a first storage controller and a migration-target volume on a second storage controller, a volume represents a virtualized device. The method presents the migration-source volume and the migration-target volume as a same volume to a host whilst using differentiated target port descriptors to define different discoverable paths to the each. During data migration, the method allows input/output operations to the migration-source volume by presenting target ports of the first storage controller in an available state and deters input/output operations to the migration-target volume by presenting target ports on the second storage controller in a standby state whilst allowing host discovery of paths to the migration-target volume. Once the data migration is complete, the method switches target port states to allow input/output operations to the migration-target volume and to deter input/output operations to the migration-source volume.