US 2022/0091753 A1 · DYNAMIC OVERPROVISIONING OF STORAGE DEVICE

Abstract

The over-provisioning (OP) of a physical storage device (PSD) may be increased, and the useful life of the PSD increased, by converting uncompressed data stored on the PSD to compressed data. It may be determined that increasing the useful life of the PSD, and the data reduction resulting from the compression, outweigh the benefit of faster I/O response times if the data remains uncompressed. A first portion of the PSD may be initially reserved for compression. A second portion of the PSD may store compressed data. It may be determined whether it is desirable to increase the OP of the PSD to thereby reduce the effective write rate on the PSD. If compression is determined to be desirable, the dynamic portion may be compressed, thereby reducing the amount of storage space consumed by the data, and freeing up storage space that can be used by the PSD for OP.

Claims20

Dependent claims

For a physical storage device including a first portion designated for dynamically compressed data and a second portion designated for compressed data, wherein data in the first portion is initially uncompressed, a method of comprising:

determining a current write rate for the physical storage device;
determining whether to increase over-provisioning for the physical storage device based on the current write rate;
and
if it is determined to increase the over-provisioning, compressing data in the first portion, resulting in one or more unused sub-portions of the first portion and use of the one or more unused sub-portions for over-provisioning.

1 more element

A system comprising:

a physical storage device including a first portion designated for dynamically compressed data and a second portion designated for compressed data, wherein data in the first portion is initially uncompressed;
executable logic that implements a method including:
determining a current write rate for the physical storage device;
determining whether to increase over-provisioning for the physical storage device based on the current write rate;
and
if it is determined to increase the over-provisioning, compressing data in the first portion, resulting in one or more unused sub-portions of the first portion and use of the one or more unused sub-portions for over-provisioning.

3 more elements

executable code that determines a current write rate for the physical storage device;
executable code that determines whether to increase over-provisioning for the physical storage device based on the current write rate;
and
executable code that, if it is determined to increase the over-provisioning, compresses data in the first portion, resulting in one or more unused sub-portions of the first portion and use of the one or more unused sub-portions for over-provisioning.

1 more element

Dependencies are inferred from the claim text.

Dynamic overprovisioning of storage device

Life of this patent

Dynamic overprovisioning of storage device

Life of this patent

Abstract

Claims20