TRANSFER FORMAT FOR STORAGE SYSTEM, AND TRANSFER METHOD

摘要

If resources allocated to a host computer exist in different physical storage nodes within a virtual storage system after performing migration to a storage system, mapping of resources among the physical storage nodes becomes necessary, and if the amount of communication between physical storage nodes that occurs during access to resources exceeds a bandwidth of the connection path, the host I/O performance may be deteriorated compared to the performance before migration. Therefore, when migration is performed from a first physical storage node to a virtual storage system composed of a plurality of second physical storage nodes, a management computer allocates resources of the second physical storage nodes within a range of bandwidth of the transfer path between the second physical storage nodes based on configuration information of the plurality of second physical storage nodes, performance information, and load information of the volume provided by the first physical storage node.

主权项

1. A system for migrating a storage system, comprising:
a host computer; a first physical storage node; a plurality of second physical storage nodes which are mutually connected; and a management computer for managing the first and the plurality of second physical storage nodes; wherein the system provides a virtual storage system in response to the host computer from the plurality of second physical storage nodes using a same identifier; wherein during migration from the first physical storage node to the virtual storage system; the management computer selects a resource from the second physical storage nodes as a migration destination based on a configuration information of the first and the plurality of second physical storage nodes, a performance information, and a volume load information provided by the first physical storage node, provided that it falls within a range of bandwidth of a transfer path mutually connecting the second physical storage nodes.