exchange2013 In addition to the standalone installation, you can also coexist with other Exchange versions, and the versions that can coexist are documented as follows:
Exchange2007 SP3 Cu10 + Exchange2013 Cu2
Exchange2010 SP3 + Exchange2013 Cu2
Exchange2007 SP3 Cu10 + Exchange2010 SP3 + Exchange2013 Cu2
Hardware requirements:
Cpu
Memory
Virtual memory
The minimum and maximum paging file size must be set to physical RAM plus ten MB and the maximum value is 32778 MB.
If you are using more than one GB of RAM, set the maximum paging file size to 32778 MB.
The paging file should be hosted on the same drive as the Exchange database file or database log file.
You must use a fixed-size paging file and do not allow Windows to manage it. When Exchange is overloaded, increasing the paging file can be a performance-intensive task and may cause problems.
This article is from the "BIT" blog, be sure to keep this source http://bianshao.blog.51cto.com/290828/1670513
Exchange2013-1-deployment prerequisites, version coexistence, hardware requirements