Management system and management method of storage system that performs control based on required performance assigned to virtual volume

摘要

A storage system is configured to manage a pool to which multiple virtual volumes (VVOLs) are associated, assign a real area (RA) from any tier in an available tier pattern associated with a write-destination VVOL to a write-destination virtual area (VA), and carry out a reassignment process for migrating data inside the RA to an RA of a different tier, based on an access status of the RA. A management system is configured to assume a specified tier has been removed from the available tier pattern of a target VVOL, predict performance of all VVOLs associated with the pool to which the target VVOL is associated, determine whether there is a VVOL for which predicted performance is lower than a required performance, and when such a VVOL does not exist, instruct the storage system to remove the specified tier from the available tier pattern of the target VVOL.

主权项

1. A management system for managing a storage system,
the storage system comprising a pool formed of multiple tiers,
wherein the multiple tiers comprise multiple real area groups having different access performances,wherein multiple virtual logical volumes (VVOLs) are associated with the pool, andwherein the storage system is configured to
receive a write command from a higher-level apparatus;assign data to a write-destination virtual area of multiple virtual areas configuring a write-destination VVOL identified based on the write command; andwrite the data conforming to the write command to a real area of the multiple real area groups, which has been assigned from the pool to the write-destination virtual area; the management system comprising:
a storage resource for storing management information,
wherein the management information comprises VVOL management information denoting required performance and available tier pattern for each VVOL,
wherein a VVOL required performance is performance required for a VVOL,wherein a VVOL available tier pattern is one or more tiers which are allowed to be an assignment source of a real area assigned to a VVOL; anda processor coupled to the storage resource,
wherein(a) the processor is configured to assign a real area from any tier in the tier pattern of the write-destination VVOL to a virtual area of the write-destination VVOL; and(b) the processor is configured to instruct the storage system to carry out a reassignment process to meet the required performance of the VVOL,
wherein the reassignment process for meeting the required performance of the VVOL includes processes for selecting from the available tier pattern a different tier than the tier that has the real area assigned to the VVOL, and for migrating, to a real area of the selected different tier, data inside the real area assigned to the VVOL.