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問題描述

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您須要瞭解Skype for Business部署高可用的作法

 

問題緣由

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N/A

 

排錯建議

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1. 以下是對於Skype for Business前端池部署的最佳實踐：

1. 前端服務器按照每一個前端池12臺8萬用戶的最佳實踐部署，則每臺服務器最多能夠最多承載6600用戶

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.

2. 同時您須要考慮高可用性，即一旦某臺服務器停機後，剩餘的服務器將承載所有用戶。此時仍需保證剩餘的服務器可以承載所有用戶：

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.

3. 對於歸檔和監控服務器，它們會並置在前端服務器：

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.

 

對於上述最佳實踐所需的硬件要求，您能夠參考以下文檔：

 

Tested Hardware Platform

https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/capacity/user-model?toc=/SkypeForBusiness/toc.json&bc=/SkypeForBusiness/breadcrumb/toc.json

 

Capacity planning user model usage for Skype for Business Server

https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/capacity/user-model?toc=/SkypeForBusiness/toc.json&bc=/SkypeForBusiness/breadcrumb/toc.json

 

2. 爲了在 Lync Server 2013 中實現最佳災難恢復能力，跨兩個地理位置分散型站點部署前端池對。每一個站點包含一個前端池，該池與另外一個站點中的相應前端池配對。這兩個站點都處於活動狀態，而且 Lync Server 備份服務提供了實時數據複製以保持池同步。該備份服務是 Lync Server 2013 中的一項新功能，旨在支持災難恢復解決方案。當您將該前端池與另外一個前端池配對時，會將該服務安裝到該池上。

 

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). 

 

有關池配對的具體信息，請參考以下文檔：

 

UNDERSTANDING LYNC 2013 SERVER FAILOVER 

http://masteringlync.com/2012/07/26/understanding-lync-2013-server-failover/

 

在 Lync Server 2013 中規劃前端池配對

https://technet.microsoft.com/zh-cn/library/jj205293(v=ocs.15).aspx

 

3. 對於持久聊天服務器的高可用和容錯，您能夠參考以下文檔：

 

Plan for high availability and disaster recovery for Persistent Chat Server in Skype for Business Server 2015

https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/persistent-chat-server/high-availability-and-disaster-recovery