I'm a bit of an Exchange admin noob so I don't know if this is normal, but on our Exchange 2007 server under C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\
there are 30,000 1MB .log files. I don't know if those should be there or not, but they keep multiplying like little jackrabbits. I've so far resisted deleting them as I'm sure something would break, but it's come to the point now where our 80GB disk is completely full up and Exchange has stopped receiving messages.
My best guess is that these are transaction logs and would be useful in rebuilding the database should something go awry, but 30GB of transaction logging seems a bit excessive. Is there a way to limit it or is that even a good idea?
And of course did I completely miss the point?
Those logs are transaction files. Do not delete them.
I'm curious here, did you install this Exchange server on your own? Placing the storage group on the same disk volume as your OS, swap file etc is absolutely not the recommended configuration for Exchange server.
You should ASAP add more storage to your server, and place the Exchange storage on it.
Please read the following article: Exchange log disk is full, Prevention and Remedies
The transaction logs should be cleared when you perform a full backup of the relevant database under normal operational conditions. When last did you perform a successful backup?
http://www.msexchange.org/articles/Transaction-Logs-Lifeblood-Exchange.html
What was needed wasn't just a backup of the server's OS volume or Exchange stores, but an Exchange-aware backup. From what I've read this functionality was only recently added natively to Exchange 07 (starting with SP2). The built-in Windows Server Backup tool can now officially make Exchange-aware backups and as soon as I configured that I magically had 30GB extra of free space. From what some people have said I agree that Exchange is a beast of a monstrosity not to be taken lightly and I clearly don't know as much as I should in administering it so I'll be looking for some training or at the very least some reading material. If anyone has some good suggestions (pauska? Evan?), feel free to comment.