Memory system and host device
US-2024394189-A1 · Nov 28, 2024 · US
Prefetching source tracks for destaging updated tracks in a copy relationship
US8949536B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8949536-B2 |
| Application number | US-201414150763-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 8, 2014 |
| Priority date | Jul 22, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A point-in-time copy relationship associates tracks in a source storage with tracks in a target storage. The target storage stores the tracks in the source storage as of a point-in-time. A point-in-time copy relationship associates tracks in the source storage with tracks in the target storage, wherein the target storage stores the tracks in the source storage as of a point-in-time. A write request is received including an updated source track for a point-in-time source track in the source storage in the point-in-time copy relationship, wherein the point-in-time source track was in the source storage at the point-in-time the copy relationship was established. The updated source track is stored in a cache device. A prefetch request is sent to the source storage to prefetch the point-in-time source track in the source storage subject to the write request before destaging the updated source track to the source storage.
First claim
Opening claim text (preview).
What is claimed is: 1. A computer program product for maintaining a copy relationship between tracks in a source storage and a target storage and communicating with a cache device, the computer program product comprising a computer readable storage medium having computer readable program code embodied therein that executes to perform operations, the operations comprising: maintaining a point-in-time copy relationship associating tracks in the source storage with tracks in the targ…
Assignees
Inventors
Classifications
Physics · mapped topic
- G06F12/0862Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8949536B2 cover?
- A point-in-time copy relationship associates tracks in a source storage with tracks in a target storage. The target storage stores the tracks in the source storage as of a point-in-time. A point-in-time copy relationship associates tracks in the source storage with tracks in the target storage, wherein the target storage stores the tracks in the source storage as of a point-in-time. A write req…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification G06F12/0862. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).