Although many basic implementations of Lync Server 2013 will be virtualized, both physical and virtual servers used for Lync Server 2013 must meet a few standards. Keep these in mind when planning a Lync Server 2013 deployment.
From a hardware perspective, the following specifications are recommended as a minimum for Lync Server 2013. It is important to note that this specification holds true for all Lync server roles except the backend database.
• CPU—64-bit, dual quad core, 2.0GHz or higher
• Disk—Two or more 10,000 rpm hard disk drives with at least 100GB usable space
• Network—A 1Gbps network adapter, except for the Edge Server role, for which four 1Gbps network adapters are recommended