问题描述
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您需要了解Skype for Business部署高可用的做法
问题原因
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N/A
排错建议
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- 如下是对于Skype for Business前端池部署的最佳实践：
- 前端服务器按照每个前端池12台8万用户的最佳实践部署，则每台服务器最多可以最多承载6600用户
In a Front End pool, you should have one Front End Server for every 6,660 users homed in your pool, assuming that hyper-threading is enabled on all servers in the pool, and that the server hardware meets the recommendations in Server requirements for Skype for Business Server 2015 or System requirements for Skype for Business Server 2019.
- 同时您需要考虑高可用性，即一旦某台服务器停机后，剩余的服务器将承载全部用户。此时仍需保证剩余的服务器能够承载全部用户：
When an active server is unavailable, its connections are transferred automatically to the other servers in the pool. In a scenario where you have 30,000 users and five Front End Servers, if one server is unavailable, the connections of 6000 of your users need to be transferred to your other four remaining servers. These four remaining servers will then each have 7500 users, which is a larger number than recommended.
- 对于归档和监控服务器，它们会并置在前端服务器：
The Monitoring and Archiving front end services run on each Front End Server, instead of on separate server roles.
Monitoring and Archiving each still require their own database stores. If you also run Exchange 2013 or later, you can keep your Archiving data in Exchange, rather than in a dedicated SQL database.
对于上述最佳实践所需的硬件要求，您可以参考如下文档：
Tested Hardware Platform
Capacity planning user model usage for Skype for Business Server
- 为了在 Lync Server 2013 中实现最佳灾难恢复能力，跨两个地理位置分散型站点部署前端池对。每个站点包含一个前端池，该池与另一个站点中的相应前端池配对。这两个站点都处于活动状态，并且 Lync Server 备份服务提供了实时数据复制以保持池同步。该备份服务是 Lync Server 2013 中的一项新功能，旨在支持灾难恢复解决方案。当您将该前端池与另一个前端池配对时，会将该服务安装到该池上。
So what exactly is this service doing? According to TechNet, “Lync Server Backup Service provides real-time data replication to keep the pools synchronized”. So what data are we talking about here? Pretty much everything. User information, contacts, conferencing data and more. Pretty much everything in the database (with the exception of response group information).
有关池配对的具体信息，请参考如下文档：
UNDERSTANDING LYNC 2013 SERVER FAILOVER
http://masteringlync.com/2012/07/26/understanding-lync-2013-server-failover/
在 Lync Server 2013 中规划前端池配对
https://technet.microsoft.com/zh-cn/library/jj205293(v=ocs.15).aspx
- 对于持久聊天服务器的高可用和容错，您可以参考如下文档：
Plan for high availability and disaster recovery for Persistent Chat Server in Skype for Business Server 2015