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Intelligent Cache Acceleration Software
智能高速缓存加速软件

Cache acceleration software (CAS) enables the implementation of media aware storage architectures through intelligent storage caching that effectively combines a layer of fast media and a lower-cost storage pool to deliver affordable, high performance storage.
缓存加速软件（CAS）通过智能存储缓存，有效地将快速介质层和低成本存储池结合起来，提供经济实惠的高性能存储，从而实现介质感知存储架构。

Today's data centers are held back by storage I/O that cannot keep up with ever-increasing demand, preventing systems from reaching their full performance potential. Traditional solutions, such as increasing storage, servers, or memory, add huge expense and complexity.
当今的数据中心由于存储 I/O 无法满足不断增长的需求，导致系统无法充分发挥其性能潜力。传统的解决方案，如增加存储、服务器或内存，会增加巨大的开支和复杂性。

Cache acceleration software was designed to use a relatively small capacity of very fast media, such as Intel® Optane™ SSDs, to modernize data center environments and accelerate storage performance.
高速缓存加速软件旨在使用容量相对较小的高速介质（如英特尔® Optane™ 固态硬盘）来更新数据中心环境并加速存储性能。
Storage I/O can be balanced with other system components, so resources are utilized more effectively. CAS has a variety of customizable options that go beyond caching the most recently accessed I/O:
存储 I/O 可与其他系统组件平衡，从而更有效地利用资源。CAS 除了缓存最近访问的 I/O 外，还有多种可定制的选项：

  • Intelligent caching with workload stratification into file and I/O classification
    智能缓存将工作负载分为文件和 I/O 两类
  • Multiple cache modes to accelerate reads vs writes
    多种高速缓存模式，可加快读写速度
  • Available enterprise validation and support
    可用的企业验证和支持
  • No application changes required
    无需更改应用程序
  • Flexible cache line sizes
    灵活的高速缓存行大小

Several implementations of CAS exist:
CAS 有几种实现方式：

  • Open CAS: An open source version available on GitHub so developers can incorporate CAS into their desired storage solution 
    开放式 CAS：GitHub 上提供的开源版本，开发人员可将 CAS 纳入其所需的存储解决方案中
  • Intel® VROC Integrated Caching: An enterprise-supported and validated version of Open CAS delivered with Intel® VROC
    英特尔® VROC 集成缓存：通过英特尔® VROC 提供的企业级支持和验证版本的 Open CAS
  • Intel® CAS for Windows: An Intel productized version available for Windows users
    英特尔® CAS for Windows：面向 Windows 用户的英特尔产品化版本

Intel® Virtual RAID on CPU Integrated Caching (Intel® VROC IC)

Intel® Virtual RAID on CPU (Intel® VROC), Intel’s enterprise integrated RAID solution for Intel® Xeon® Scalable processors, is adding support for intelligent integrated caching.

  • Built on Open CAS

  • RAID + caching = redundancy + performance

  • Enterprise supported and validated

  • Flexible usage models

  • Eliminates single points of failure 

  • Delivered through participating server vendors as a feature of the platform

  • Pre-validated solution vetted and documented by Intel for easy installation

Learn more about Intel® VROC

diagram

Open Cache Acceleration Software (Open CAS)

Open CAS Linux is an open source project that can accelerate your I/O-bound business applications that relay on slower SAN or direct attached back-end storage.

Why use Open CAS?

  • Categorize I/O by block size, file, directory/path, or metadata for flexible cache tuning
  • Update all servers at once without stopping I/O
  • Increasing cache line size decreases memory footprint
  • Flexible framework with kernel modules and wrappers to port CAS into desired storage stack

Get Open CAS

Support

Basic Open CAS support included when using an Intel® Optane™ SSD