Dell products l.p. (20240176489). PRIORITY BASED RAID (REDUNDANT ARRAY OF INDEPENDENT DISKS) REBUILD FOR A DATA STORAGE SYSTEM simplified abstract

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PRIORITY BASED RAID (REDUNDANT ARRAY OF INDEPENDENT DISKS) REBUILD FOR A DATA STORAGE SYSTEM

Organization Name

dell products l.p.

Inventor(s)

Amitai Alkalay of Kadima (IL)

Amihay Azruel of Raanana (IL)

Lior Kamran of Richon LeZion (IL)

PRIORITY BASED RAID (REDUNDANT ARRAY OF INDEPENDENT DISKS) REBUILD FOR A DATA STORAGE SYSTEM - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240176489 titled 'PRIORITY BASED RAID (REDUNDANT ARRAY OF INDEPENDENT DISKS) REBUILD FOR A DATA STORAGE SYSTEM

Simplified Explanation

The abstract describes a patent application for a data storage system that organizes non-volatile data storage into multiple RAID extents, each containing logically contiguous RAID stripes. In the event of a failed drive, the system performs an initial rebuilding pass on each RAID extent to recover data from high priority RAID stripes. Subsequent rebuilding passes recover data from non-high priority RAID stripes.

  • The patent application describes a data storage system that uses RAID extents and RAID stripes to organize non-volatile data storage.
  • When a drive fails, the system performs an initial rebuilding pass on each RAID extent to recover data from high priority RAID stripes.
  • Subsequent rebuilding passes are then performed on each RAID extent to recover data from non-high priority RAID stripes.

Potential Applications

This technology could be applied in enterprise data centers, cloud storage systems, and large-scale storage solutions where data redundancy and fault tolerance are crucial.

Problems Solved

1. Data loss due to drive failures in a storage system. 2. Ensuring data availability and integrity during drive rebuild processes.

Benefits

1. Improved data reliability and fault tolerance. 2. Efficient data recovery processes in case of drive failures. 3. Enhanced system performance through optimized data storage and rebuilding strategies.

Potential Commercial Applications

Optimizing Data Storage and Recovery Processes in Large-Scale Systems

Possible Prior Art

One possible prior art could be traditional RAID systems that also use striping and redundancy for data protection.

Unanswered Questions

How does the system prioritize RAID stripes during the rebuilding process?

The abstract mentions high priority and non-high priority RAID stripes, but it does not specify the criteria used for this prioritization.

What is the impact of multiple rebuilding passes on system performance and data integrity?

While the abstract describes multiple rebuilding passes, it does not discuss the potential implications of this approach on overall system performance and data consistency.


Original Abstract Submitted

non-volatile data storage of a data storage system is organized into multiple raid extents. each raid extent contains multiple logically contiguous raid stripes. in response to detecting a failed drive in the data storage system, an initial rebuilding pass is performed on each one of the raid extents. the initial rebuilding pass recovers data that was previously stored on the failed drive and was located within high priority raid stripes in the raid extent. after the initial rebuilding pass is completed on all of the raid extents, at least one subsequent rebuilding pass is performed on each one of the raid extents. the subsequent rebuilding pass recovers data that was previously stored on the failed drive and was located within raid stripes in the raid extent that are not high priority.