US 2026/0169857 A1 · Cross-Shelf Data Replication

Abstract

The disclosure describes systems, devices, and methods for replicating metadata in data storage environments. In an example embodiment, a method for operating a controller in a data storage environment to provide cross-shelf data replication is provided. In performing the method, the controller generates metadata for an input/output (I/O) request upon receiving the I/O request. The controller identifies a primary location at which to store the metadata and identifies a secondary location at which to store a replicated version of the metadata, then stores the metadata at the primary location and the replicated version at the secondary location. The primary and secondary locations correspond to storage devices in the data storage environment located on different physical shelves or enclosures, such that the metadata is stored across multiple drive shelves for redundancy and recovery purposes.

Claims27

Dependent claims

A computing apparatus comprising:

one or more computer-readable storage media;
and
program instructions stored on the one or more computer-readable storage media executable by a processing device that, based on being read and executed by the processing device, direct the processing device to:
receive a write request corresponding to user data to be stored in a storage aggregate of a data storage environment;
generate metadata associated with the write request;
identify a primary location at which to store the metadata, wherein primary location comprises a logical address associated with a physical location on a first shelf of the data storage environment;
identify a secondary location at which to store a replicated version of the metadata, wherein the secondary location comprises a logical address associated with a physical location on a second shelf of the data storage environment that differs from the first shelf;
and
store the metadata and the replicated version of the metadata using respective logical addresses.

6 more elements

One or more non-transitory computer-readable storage media having stored thereon program instructions executable by one or more processors of a data storage environment comprising a storage aggregate that includes multiple drives, and one or more controllers capable of communicating with each of the drives in the storage aggregate, that, when executed by the one or more processors, direct the one or more processors to:

receive a write request corresponding to user data to be stored in a storage aggregate of a data storage environment;
generate metadata associated with the write request;
identify a primary location at which to store the metadata, wherein primary location comprises a logical address associated with a physical location on a first shelf of the data storage environment;
identify a secondary location at which to store a replicated version of the metadata, wherein the secondary location comprises a logical address associated with a physical location on a second shelf of the data storage environment that differs from the first shelf;
and
store the metadata and the replicated version of the metadata using respective logical addresses.

3 more elements

A method executed by one or more processors, comprising:

generating metadata associated with a write request received for writing data in a storage system having a first shelf with a first set of storage devices and a second shelf having a second set of storage devices different from the first set storage devices;
identifying a primary location to store the metadata, wherein primary location comprises a logical address associated with a physical location on a first shelf;
identifying a secondary location to store a replicated version of the metadata, wherein the secondary location comprises a logical address associated with a physical location on the second shelf ;
and
storing the metadata and the replicated version of the metadata using respective logical addresses.

2 more elements

Dependencies are inferred from the claim text.

Cross-Shelf Data Replication

Life of this patent

Cross-Shelf Data Replication

Life of this patent

Abstract

Claims27