I was just looking through old notes for a pair of Exchange servers that I spec'd for a project a while ago at a previous job. They were for a fairly large organization with large mail quotas, so each mailbox server had 96GB RAM. The disk layout was:
147GB RAID1 for the OS, applications, and pagefile
1.2TB RAID 10 for the mail databases
900GB RAID 10 for the logs
This seemed good in theory until you realize that, by default, you're going to have a 96GB pagefile on the 147GB partition, causing it to hit full-disk pretty quickly. In a situation like this, do you move the pagefile to another partition and lose the ability to recover crash dumps and also sacrifice some performance? Should I have ordered a pair of 300GB disks for the mirror instead (which is what I ended up doing)? Should I have artificially limited the pagefile size to something smaller like 32GB?