Limits of SharePoint 2013 towards content database level:
- There can be 500 content databases per farm.
- The content database size can be of 200 GB.
- In the document archive scenarios, there is no limit on content database size.
- There can have 60 million items including list and document items inside content databases.
- Maximum of 10,000 site collections can be possible per content database. There can have 2,500 non-Personal site collections and 7,500 Personal Sites, or 10,000 Personal Sites alone.
- The time to first byte of any response from the Network Attached Storage (NAS) cannot exceed 20 milliseconds.
Limits of SharePoint 2013 towards Site collection level:
- There can have 750,000 (500,000 Personal Sites and 250,000 other sites per farm) site collections per farm.
- 250,000 Web site are supported per site collection.
- The maximum allowed number of device channels per publishing site collection is 10.