Write-through-and-back cache

Inactive Publication Date: 2012-11-08
IBM CORP
View PDF11 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a disadvantage of DRAM is that is it is volatile and data stored in DRAM is lost when power is removed from the memory devices.
However, a disadvantage of disk storage devices is that they have relatively slow access for storing and retrieving data.
While fla

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Write-through-and-back cache
  • Write-through-and-back cache
  • Write-through-and-back cache

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013]The following description is made for the purpose of illustrating the general principles of the invention and is not meant to limit the inventive concepts claimed herein. Further, particular features described herein can be used in combination with other described features in each of the various possible combinations and permutations. Unless otherwise specifically defined herein, all terms are to be given their broadest possible interpretation including meanings implied from the specification as well as meanings understood by those skilled in the art and / or as defined in dictionaries, treatises, etc.

[0014]As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or computer program product. Accordingly, aspects of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Embodiments are provided for cache memory systems. In one general embodiment, a system that includes a storage device, and at least one storage class memory device operating as a write cache for the storage device. The storage device further includes a first storage location for data received from a host computer during a host write request and a second storage. Data received from a host write request is written to the storage class memory device, to the first location in the storage device, and to the second location in the storage device that logically reflects the location of the data in the storage class device location configured as a log structured file.

Description

BACKGROUND[0001]The present invention relates generally to computer cache memory systems, and more particularly, to a cache memory that includes aspects of write-through and write-back caches.[0002]Data may be stored and retrieved from some types of memory devices used in computer systems more rapidly than for other types of memory devices. For example, DRAM (dynamic random access memory) is relatively low in cost and has fast access. However, a disadvantage of DRAM is that is it is volatile and data stored in DRAM is lost when power is removed from the memory devices. Disk storage devices with magnetic, optical, or other types of rotating disk media are nonvolatile, have very low cost per byte of storage, and very high storage capacity. However, a disadvantage of disk storage devices is that they have relatively slow access for storing and retrieving data.[0003]To reduce access times for disk storage devices, cache memory systems may be used to hold data that has been recently read...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F12/08
CPCG06F12/0804G06F2212/222G06F2212/1032G06F12/0866
Inventor GILL, BINNY S.
Owner IBM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap