Xtrabackup------MySQL DBA的必备工具
注意：
1)文档参照http://www.percona.com/docs/wiki/percona-xtrabackup:start
2)mysql要使用5.1.50版本或以上。
一、Xtrabackup简介及安装
1、Xtrabackup 是percona的一个开源项目，可以热备份innodb ，XtraDB,和MyISAM（会锁表），可以看做是InnoDB Hotbackup的免费替代品。
Percona Support for MySQL
| Benefit | Silver (Per Server) | Gold (Unlimited) | Platinum (Unlimited) |
|---|---|---|---|
| Annual Price | $1,500/server | From $15,000 | From $30,000 |
| Number of Servers Covered | Per-Server | Unlimited | Unlimited |
| Number of Support Incidents | Unlimited | Unlimited | Unlimited |
| Response Time SLA | 60 Minutes | 30 Minutes | 30 Minutes |
| Named Support Contact Persons | 5 | 10 | 20 |
| Email, Web, & Chat Support |  |  |  |
| Phone Support |  | | |
| Login Support | | | |
| 24×7 Support | | |
