C:\ Drive space on Exchange Server

Exchange Server C:\ drive suddenly fill-up, total capacity is 900GB but now it has only 2 GB free space.

Temp= empty
%temp%=empty
Clean desk
Databases on another drive
Exchange logs on another drive
No backup logs
No extra application installed

Windows server 2016 & Exchange Server 2016

What could be the reason? Please help.

Regards
Se LaiSystem Administrator Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

CompProbSolvCommented:
I would start with TreeSize Free from jam-software.com.  It will catalog the drive and show you were all the space went.
0
Michael B. SmithExchange & Active Directory ExpertCommented:
I generally assume log files, unless otherwise indicated. Here is a script that will remove old log files:

Delete text-based Exchange log files, including those from IIS
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Phillip MonkIT ManagerCommented:
I use WinDirStat (+1 for providing MD5 / SHA1 hashes to verify your DL) for such emergencies.
I've had the CBS.log file balloon to enormous size before (c:\windows\logs\) on my prodcution servers, could be worth a look.
0
Newly released Acronis True Image 2019

In announcing the release of the 15th Anniversary Edition of Acronis True Image 2019, the company revealed that its artificial intelligence-based anti-ransomware technology – stopped more than 200,000 ransomware attacks on 150,000 customers last year.

Se LaiSystem Administrator Author Commented:
Michael B. Smith

The IIS logfiles consumed 696 GB space. shell i go and run the script or remove it manually.

Regards
0
Michael B. SmithExchange & Active Directory ExpertCommented:
Whatever you prefer :-)

Either works.
0
William FulksSystems Analyst & WebmasterCommented:
You can go into IIS Manager and then the Logging options and specify another folder to place those logs, in case you need them. Putting them to the C: drive can cause problems like what you ran into. You can also set up an automated task to clear them whenever you need.

Here's a great little guide from Microsoft - https://docs.microsoft.com/en-us/iis/manage/provisioning-and-managing-iis/managing-iis-log-file-storage
0
Edward van BiljonMessaging and Collaboration Technical Lead (Exchange MVP)Commented:
Hi

There are a number of log files that don't get truncated with backups. You can find my clear logs script on the technet gallery and it should clear a couple of gigs of space
1
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 10

From novice to tech pro — start learning today.