SQL Server 2016
SQL Server 2014 64-bit SP1 or later
SQL Server 2012 64-bit SP3 or later
Any of the following 64-bit multi-core processor machines:
Windows Server 2016
Windows Server 2012 R2
Windows Server 2012
Windows Server 2008 R2 SP1 or later with latest service pack / update
Minimum 16 GB RAM
Depending on the size and frequency of your scans, you might need significantly more RAM.
Minimum 100 GB free space; Use RAID-10 if possible; RAID-5 not recommended.
For additional requirements, including operating system support, refer to Microsoft’s Hardware and Software Requirements for Installing SQL Server at: https://msdn.microsoft.com/en-us/library/ms143506(v=sql.120).aspx.