YL写信问我：替代RAID的CLUSTER的解决方案，发现safekit能满足需求，费用较低。原来公司MIS有人是专门做SAFEKIT的，而且他就坐在我隔壁的办公室，竟然不知啊，有机会得请教请教了。

照抄的7 Reasons to Consider a Clustered Database:
1. Reduce upfront costs
2. Utilize idle hardware capacity
3. Drive down costs of scaling lower cost hardware
4. Consolidate databases
5. Improve business service levels
6. Avoid business downtime
7. Manage future needs