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CDP的定义
来源: 作者: 2007-11-29 19:40:56CDP(SNIA定义)
The SNIA DMF CDP SIG defines CDP as follows: 中国容灾网,Rongzai.com.cn。
Continuous data protection (CDP) is a methodology that continuously captures or tracks data modifications and stores changes independent of the primary data, enabling recovery points from any point in the past. CDP systems may be block-, file- or application-based and can provide fine granularities of restorable objects to infinitely variable recovery points. So, according to this definition, all CDP solutions incorporate these three fundamental attributes:
1. Data changes are continuously captured or tracked
2. All data changes are stored in a separate location from the primary storage
3. Recovery point objectives are arbitrary and need not be defined in advance of the actual recovery 中国容灾网,独家发布。
中国容灾网翻译(引用时请注明出处并添加链接):
中国容灾网,护航业务。
数据连续性保护技术CDP持续的追踪、捕获数据的变化并保存变化记录,以便恢复到之前的任意时间点。CDP可以是基于块级的、文件级的,也可以是基于应用的,能够提供很好的颗粒度恢复目标,无限定义恢复时间点。
CDP技术具有以下三个基本属性: 中国容灾网,独家发布。
1.数据的变化被持续的追踪捕获;
2.所有变化数据被存储到主存储之外的独立空间;
3.恢复的目标时间点可以是任意的,不需要预定义。
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