The drive that our exchange database occupied on our server was running out of space. So we put in a NAS, mapped an iSCSI drive, and used MS iSCSI initiator to connect to the NAS, moved exchange to that new iSCSI drive.
It was working great for the first few weeks however recently it seems that the exchange databse will become dismounted during the early morning hours. I only find this out when I see that my exchange email is syncing on my phone, after which I remote in, check mailbox store on ESM, and right click to mount the database. I've already tried restarting the server and the NAS and I have checked that the NAS should have plenty of space to accommodate our exchange database.
Any ideas on how to fix this? Thanks.