Memory system and host device
US-2024394189-A1 · Nov 28, 2024 · US
Handling high priority requests in a sequential access storage device having a non-volatile storage cache
US8996789B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8996789-B2 |
| Application number | US-201213411159-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2012 |
| Priority date | May 23, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Modified tracks for write requests to a sequential access storage medium in a sequential access storage device are cached in a non-volatile storage, which is a faster access device than the sequential access storage medium. A request queue includes destage requests to destage the modified tracks in the non-volatile storage device to the sequential access storage medium and read requests to access read requested tracks from the sequential access storage medium. A comparison is made of a current position of a read/write mechanism with respect to physical locations on the sequential access storage medium of the tracks subject to the destage requests indicated in the request queue. A determination is made of one of the destage requests to process based on the comparison. The modified track for the determined destage request is written from the non-volatile storage device to the sequential access storage medium.
First claim
Opening claim text (preview).
What is claimed is: 1. A computer program product for managing data in a sequential access storage device receiving read requests and write requests from a system with respect to tracks stored in a sequential access storage medium, wherein the sequential access storage device includes a read/write mechanism to read and write data with respect to the sequential access storage medium, the computer program product comprising a non-transitory computer readable storage medium having com…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G06F12/0804Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8996789B2 cover?
- Modified tracks for write requests to a sequential access storage medium in a sequential access storage device are cached in a non-volatile storage, which is a faster access device than the sequential access storage medium. A request queue includes destage requests to destage the modified tracks in the non-volatile storage device to the sequential access storage medium and read requests to acce…
- Who is the assignee on this patent?
- Benhase Michael T, Gupta Lokesh M, IBM
- What technology area does this patent fall under?
- Primary CPC classification G06F12/0804. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 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).