US 2021/0240370 A1Published application

Virtual storage system

AssigneeHitachi, Ltd.

InventorsAkira YAMAMOTO, Hiroaki AKUTSU, Tomohiro KAWAGUCHI

Life of this patent

Estimating the term…

Loading patent…

Abstract

A virtual storage system according to an aspect of the present invention includes multiple storage systems each including: a storage controller that accepts a read/write request for reading or writing from and to a logical volume; and multiple storage devices. The storage system defines a pool that manages the storage device capable of allocating any of storage areas to the logical volume, and manages the capacity (pool capacity) of the storage areas belonging to the pool, and the capacity (pool available capacity) of unused storage areas in the pool. Furthermore, the storage system calculates the total value of the pool available capacities of the storage systems included in the virtual storage system, and provides the server with the total value as the pool available capacity of the virtual storage system.

Claims9

Dependent claims

A distributed storage system comprising:

a plurality of nodes connected by a network, each node including:
a storage device for storing data;
and
a controller for performing reading and writing of the data,
wherein the plurality of nodes constitute a virtual storage system managed by a common identifier, and
wherein each node:
allocates a storage area of the storage device to form a pool volume, respectively, for the storage system, and manages a capacity and an available capacity thereof,
allocates a storage area of the pool volume to form a virtual volume to be provided to an information processing device,
receives an I/O request, determines whether or not the I/O request is related to the virtual volume of the node itself, executes the I/O request in case the request relates to the virtual volume of the node itself, and transfers the I/O request to another node if the I/O request received is not related to the virtual volume of the node itself,
selects a virtual volume having a first identifier to be migrated from a migration source node to a migration destination node in the storage system,
migrates, to a virtual volume of the migration destination node, data for the virtual volume to be migrated,
transmits, from a first storage device of the migration source node to a second storage device of the migration destination node, data relating to the virtual volume to be migrated, wherein the virtual volume of the migration destination node is identified by the first identifier, and
during transmission of the data, is capable of accessing transmitted data via the virtual volume,
wherein a pool volume in the migration destination node that is allocated to the virtual volume in the migration destination node remains allocated to the virtual volume in the migration destination node before and after the migration of the virtual volume and the transmission of the data.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/191,812Filed 4 Mar 2021
Priority: 29 Feb 2016
Published: 5 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06F 3/0631
Configuration or reconfiguration of storage systems: by allocating resources to storage systems
G06F 3/0604
Specifically adapted to achieve a particular effect: improving or facilitating administration, e.g. storage management
G06F 3/0608
Specifically adapted to achieve a particular effect: saving storage space on storage systems
G06F 3/0664
Virtualisation aspects: at device level, e.g. emulation of a storage device or system

Family

Application15/646,364Continuation · filed 11 Jul 2017
Application16/597,967Continuation · filed 10 Oct 2019
Application17/191,812Continuation
US 10,452,293 B2Related patent
US 10,956,063 B2Related patent
US 11,829,617 B2Related patent
US 2017/0308316 A1Published application
US 2020/0042213 A1Published application
US 2021/0240370 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key