Skype for Business server 2015 has almost same Hardware and Software requirements as we had for Lync Server 2013. Skype for Business Server 2015 supports in-place upgrade from Lync Server 2013 because of same H/W profile. This article will provide you all the requirements which is useful for planning to deploy Skype for Business server 2015 in green field environment or brown field environment.
Hardware and software requirements for Skype for Business Server 2015:
| Components | Standard Edition Server | Front End Server | Back End Server | Persistent Chat Server |
| CPU | 64 bit, 2.26 GHz dual processor with 6 cores each or higher | 64 bit, 2.26 GHz dual processor with 6 cores each or higher | 64 bit, 2.26 GHz dual processor with 6 cores each or higher | 64 bit, 2.26 GHz dual processor with 6 cores each or higher |
| Memory | 32 GB | 32 GB | 32 GB | 32 GB |
| Disk | 2 x 10K RPM disks in RAID1 for OS 6 x 10K RPM disks in RAID 10 for Data |
2 x 10K RPM disks in RAID1 for OS 6 x 10K RPM disks in RAID 10 for Data |
2 x 10K RPM disks in RAID1 for OS 6 x 10K RPM disks in RAID 10 for Data |
2 x 10K RPM disks in RAID1 for OS 6 x 10K RPM disks in RAID 10 for Data |
| Network | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together |
| Operating System | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 |
| Common Prerequisite | Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
| Additional Prerequisite | Internet Information Services (IIS) Windows Media Format Runtime .NET Framework 3.5 Silverlight |
Internet Information Services (IIS) Windows Media Format Runtime .NET Framework 3.5 Silverlight |
Message Queuing |
| Components | Mediation Server | Video Interop Server | Directors | Edge Server |
| CPU | 64 bit, 2.26 GHz dual processor with 4 cores each or higher | 64 bit, 2.26 GHz dual processor with 4 cores each or higher | 64 bit, 2.26 GHz dual processor with 4 cores each or higher | 64 bit, 2.26 GHz dual processor with 4 cores each or higher |
| Memory | 16 GB | 16 GB | 16 GB | 16 GB |
| Disk | 2 x 10K RPM disks in RAID1 for OS 2 x 10K RPM disks in RAID 10 for Data |
2 x 10K RPM disks in RAID1 for OS 2 x 10K RPM disks in RAID 10 for Data |
2 x 10K RPM disks in RAID1 for OS 2 x 10K RPM disks in RAID 10 for Data |
2 x 10K RPM disks in RAID1 for OS 2 x 10K RPM disks in RAID 10 for Data |
| Network | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together | 1 x dual port GbE NIC teamed together or 2 x single/dual port GbE teamed together |
| Operating System | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 |
Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 | Windows Server 2012/2012R2 with latest service pack & updates + hotfix KB article 2858668 for windows server 2012 and KB article 2982006 for windows server 2012 R2 |
| Common Prerequisite | Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
Windows PowerShell 3.0 Microsoft .NET Framework 4.5 with HTTP Activation Windows Identity Foundation Remote Server Administration Tools |
| Additional Prerequisite | Internet Information Services (IIS) |
You can use below scripts to install additional prerequisites:
Standard Edition / Front End Servers: Add-WindowsFeature NET-Framework-Core, RSAT-ADDS, Windows-Identity-Foundation, Web-Server, Web-Static-Content, Web-Default-Doc, Web-Http-Errors, Web-Dir-Browsing, Web-Asp-Net, Web-Net-Ext, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Http-Logging, Web-Log-Libraries, Web-Request-Monitor, Web-Http-Tracing, Web-Basic-Auth, Web-Windows-Auth, Web-Client-Auth, Web-Filtering, Web-Stat-Compression, Web-Dyn-Compression, NET-WCF-HTTP-Activation45, Web-Asp-Net45, Web-Mgmt-Tools, Web-Scripting-Tools, Web-Mgmt-Compat, Server-Media-Foundation, BITS -Source D:\sources\sxs
Directors: Add-WindowsFeature RSAT-ADDS, Web-Server, Web-Static-Content, Web-Default-Doc, Web-Http-Errors, Web-Asp-Net, Web-Net-Ext, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Http-Logging, Web-Log-Libraries, Web-Request-Monitor, Web-Http-Tracing, Web-Basic-Auth, Web-Windows-Auth, Web-Client-Auth, Web-Filtering, Web-Stat-Compression, NET-WCF-HTTP-Activation45, Web-Asp-Net45, Web-Scripting-Tools, Web-Mgmt-Compat, Desktop-Experience, Telnet-Client D:\Sources\SxS\
Mediation Server: Add-WindowsFeature NET-Framework-Core, RSAT-ADDS, Windows-Identity-Foundation, NET-WCF-HTTP-Activation45, Web-Asp-Net45 -Source D:\sources\sxs
Persistent Chat Server: Add-WindowsFeature Net-Framework-Core, RSAT-ADDS, Windows-Identity-Foundation, NET-WCF-HTTP-Activation45, Web-Asp-Net45, MSMQ –Source D:\Sources\SxS\
Edge Server: Add-WindowsFeature NET-Framework-Core, Windows-Identity-Foundation, NET-WCF-HTTP-Activation45, Web-Asp-Net45 -Source D:\sources\sxs
InsideMSTech 
Thanks for the infor. I wanted to know the above server hardware capacity is more enough for handling 20 thousand users.
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Yes, It is… But you have to make sure that you have enough FE servers in FE pool based on modalities.
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