VMware Data Recovery 管理员指南 ZH_CN-000193-00 VMware Data Recovery 2 VMware, Inc. 您可以在 VMware 的网站上找到最新的技术文档，网址为 http://www.vmware.com/cn/support/ VMware 网站还提供了最新的产品更新。 如果您对本文档有任何意见和建议，请将您的反馈提交到： 1 了解 VMware Data Recovery 7 备份虚拟机 7 卷影复制服务 8 删除重复存储的优点 8 2 安装 VMware Data Recovery 9 VMware Data Recovery 系统要求 9 安装客户端插件 9 安装备份设备 10 向备份设备中添加硬盘 10 3 配置 VMware Data Recovery 13 启动备份设备 13 配置备份设备 VMware Data Recovery 故障排除 18 索引 21 VMware, Inc. 3 VMware Data Recovery 4 VMware, Inc. 关于本文档 《VMware Data Recovery 管理员指南》包含为中小型企业建立备份解决方案的信息。 目标读者 本文档适用于需要使用 VMware Data Recovery 提供备份解决方案的用户。本书的目标读者为熟悉虚拟机技术

No-Redo Undo + Redo (performance: fastest recovery: slowest) No-steal No-Undo / No-Redo (performance:slowest recovery:fastest) Redo / No-Undo Recovery without Logging: Shadow Paging（LMDB） 16 log。保证事务的持久性。 Write Ahead Logging 采用WAL协议的恢复算法: Dr. C. Mohan ARIES: Algorithms for Recovery and Isolation Exploiting Semantics, 1993, IBM DB2 19 ● Steal + No-force ● redo log，没有undo log，事务回滚不需要做undo操作 •

(see httpd). This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do Copyright 2014 The Apache Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers

(see httpd). This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do Copyright 2014 The Apache Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers

(see httpd). This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do Copyright 2015 The Apache Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers

(see httpd). This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do Copyright 2014 The Apache Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers

(see httpd). This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do Copyright 2017 The Apache Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers

splitting capabilities and can achieve read access load balancing based on the understanding of SQL semantics and the ability to perceive the underlying database topology. Da ta M ig ra ti on Data migration thresh‐ old, DBA’s operation pressure will also increase. The time cost of data backup and data recovery will be more uncontrollable with increasing amount of data. Generally, it is a relatively reasonable Challenges Although data sharding solves problems regarding performance, availability, and backup recovery of single points, the distributed architecture has introduced new problems while gaining benefits

non-functioning server. This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do a write(2) or writev(2) Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers

non-functioning server. This still will not guarantee that the server will restart correctly. To check the semantics of the configuration files as well as the syntax, you can try starting httpd as a non-root user the HTTP response header and the requested file with a single sendfilev(2) system call. Sendfile semantics vary among operating systems. On some other systems, it is necessary to do a write(2) or writev(2) Description: CERN httpd metafile semantics Status: Extension Module Identifier: cern_meta_module Source File: mod_cern_meta.c Summary Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP headers