【连载】vSphere 4.0 问答(5) --- Licensing服务器宕机会发生什么？

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问：Licensing服务器宕机会发生什么？
答：14天内都没问题，超过14天以后，下列操作无法执行：

•   开启虚机
•   增加ESX主机
•   将ESX主机加入或移出HA/DRS集群
•   VMotion
•   DRS集群的负载均衡
•   重启虚机
•   添加或删除License密钥
•   升级

所以，只要能在14天内恢复Licensing服务，就不会有大碍。但是，如果你的vCenter和Licensing服务器是一台搭载在License已过期的ESX主机上，那情况就比较复杂了。

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What happens if my licensing server is down? 

Licenses are good for 14 days, after which you won’t be able to do certain things, such as:

• Power on virtual machines
• Add an ESX host
• Move an ESX Server in/out of a DRS-HA cluster
• Start VMotion
• DRS cluster load-balancing
• Restart VMs
• Add or remove license keys
• Upgrade.

As long as your hosts refresh their licenses sometime during the 14 days, you should be good to go. However, it can be quite complicated if your vCenter and license server is a VM and on a host with an expired license.

Keep in mind that this is only applicable when the vCenter 2.5 Licensing server is used for backwards compatibility.