文档介绍：计算机研究与发展
ISSN
1000— 1 1-1 777/TP
Journal puter Research and Development
一种支持持续数据保护的虚拟存储设备的设计与实现
48(Suppl.):278—282,201l
李
亮
罗
字
文
莎
(国防科学技术大学计算机学院长沙410073)
(1l_******@)
Design and Implentation of
Protection
a
Virtual Storage Device to Support Continuous Data
Li Liang,Luo Yu,and
Wen
Sha
(College
puter,National University of Defense Technology,Changsha 410073)
Abstract
Data is critical
the system fails,it's
necessary
quickly and correctly
data from in this data protection technology have their own limitation,such
mirroring,snapshot and
provide continuous data protection for this
paper,we designed and implemented
continuous
data protection system YH—CDPS based
block
device the
that the system is down
other questions arise。our YH—CDPS
quickly
data
any
previous time,while it is transparent
Key words
continuous
data protectio玎(CDP)I redirect—on—write;virtual device;recovery time
摘要数据对于企业至关重要,当系统失效时,
术,如镜像、快照和备份都有各自的缺点,
持续数据保护系统YH—,通过该系统可迅速恢复到之前任何时间点的状态,且对
用户透明.
关键词持续数据保护(CDP);redirect-on-write;虚拟设备;恢复时闻
中图法分类号TP333
随着信息化水平的不断提高。数据业已成为人
到软硬件失效、自然灾害、人为过失,病毒入侵等威
术应运而生.
存储网络工业协会(working industry
胁而导致数据损坏或丢失,所