mini server performance
I'm assisting a small workgroup using a 2012 2 core/8gb Mini running Yosemite and Server 4 (file sharing, mail and web) and it seems to be struggling. I'm fairly sure it began after they started using the mail server and transferred several years' worth of messages to it. I'm going to try the obvious thing of moving the data on to an SSD as it's currently on a 7200rpm SATA drive, but I was wondering if anyone has any thoughts about the performance of Minis as servers generally? I've always had doubts about their suitability. How would they compare performance-wise with a mid-range NAS box (which I don't have experience of)?
thanks