We have a small DAG configuration based around Exchange 2013 CU7, on top of Server 2012. Our OS drive was pretty full since the get go, but we are getting close to the 90% full mark (on a 135GB disk). When looking at the server the main culprits appear to be:
-DailyPerformanceLogs folder - about 5.5GBs
-Mail.que file - about 12GBs
-V15/Logging folder - around 29GBs
-Paging file - around 13GBs (auto-managed, one location, based on 96GBs RAM, normal utilization about 50%
What are the specific suggestions for dealing with the situation? Some of our ideas were:
We have a secondary location which could be used to store the V15/Logging folder - I assume that "junctions" program might need to be used? Is there a walk-through for accomplishing this? Other option would be to run a PowerShell script deleting anything older in there than 14 days. Are these logs used ONLY for troubleshooting with MS, and could this be a safe thing to do? I assume that there is no global setting to change the retention here from 30 days down to 14 (I think the default is 30 days)?
Also, what would be a procedure to follow for replacing the mail.que file with a fresh one - I assume that is a supported way to "shrink" that file.
Paging file - obviously the old rule of setting up the 1.5 times the amount of RAM is not working in the world of loaded servers and virtual environments too well - is there a risk with lowering that value to 4-8GBs on such server?