Lsi Corporation

Avago Technologies General IP (Singapore) Pte. Ltd.

Jianning Wang

Daniel Gnanaraj Samuelraj

Anuj Kumar Jain

Jinwen Xie

Subhankar Mukherjee

Methods and structure for automatic creation of Redundant Array of Independent Disks (RAID) volumes are provided. The system comprises A RAID controller that includes a memory and a processor. The memory stores information describing storage devices of a storage system. The processor is able to receive a request to generate a RAID volume, to access the memory to identify a first group of storage devices that each have a first storage capacity, and to determine an expected size of a volume implemented by the first group. The processor is further able to access the memory to identify a second group of storage devices that each have a second storage capacity, to determine an expected size of a volume implemented by the first group and the second group, and to select one or more of the groups to create the requested volume based on the expected sizes.

Redundant array of independent disks volume creation

A software-based RAID system is provided that enables configuration conflicts to be detected and resolved between a PD that is logically present but physically missing, and a PD that is physically and logically present. In accordance with the invention, a determination is made as to whether such a configuration conflict exists, and if so, the logically-present, but physically missing, reference identifier associated with the PD is remapped to a port number that currently is not in use.

Method and system for resolving configuration conflicts in RAID systems

A RAID level migration system and method are provided that enable RAID level migration to be performed without the use of a hardware RAID controller with NVRAM for storing the migration parameters. Eliminating the need for a hardware controller having NVRAM significantly reduces the costs associated with performing RAID level migration. The system and method are capable of migrating from any arbitrary RAID level to any other arbitrary RAID level.

Growing community of inventors

Kennesaw, GA, United States of America

Jianning Wang