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MariuszGora-6641 avatar image
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MariuszGora-6641 asked JadeLiang-MSFT commented

High disk space occupation on Exchange

Hi,
I have Microsoft Exchange Server 2016 on-premise.
During installation couple years ago I set up 90GB disk for OS and Exchange binaries and separate disk for mailbox databases.

Currently I have only 14% free space on system drive. From time to time server system drive fills up and I occurs Back Pressure issue.
The biggest catalogues are Windows (over 25GB) and %ExchangeInstallPath% (almost 30GB).
On this disk I keep Queue Database (in my case not more than 2GB, so is isn't so big) other mailbox databases are on dedicated separate disk.

I free-up this disk as much as I can (remove unused applications, unused users accounts, empty trash, etc.) but I can't go over 15% free space.

Is there anything can I do to free-up more disk space? Especially to reduce %ExchangeInstallPath% and Windows directory size.

office-exchange-server-administrationoffice-exchange-server-mailflow
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Hi @MariuszGora-6641,

%ExchangeInstallPath% (almost 30GB).

What's the speicific folder that takes up much space under this location? If it's caused by log file, agree with Andy, you could try to clear it following the document. If that's not your case, please provide us with more information about it.

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AndyDavid avatar image
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AndyDavid answered JadeLiang-MSFT commented

Follow this to clear some space and create a scheduled task to clear on a regular basis
https://social.technet.microsoft.com/wiki/contents/articles/31117.exchange-logging-clearing-log-files.aspx

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Hi @MariuszGora-6641,

Are you still researching for it?

It's recommeneded to follow the suggestions above to clear space to check, if you still have any questions, please provide us with more information about it.

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imamitsingh avatar image
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imamitsingh answered

How often do you take full backup? The logs can take up a lot of space and are truncated after a full backup. So if you are not regularly doing a full backup, then your logs will keep accumulating.
Helpful Links:

https://techgenix.com/manage-log-files-in-exchange-server/
https://searchwindowsserver.techtarget.com/answer/How-do-I-avoid-Exchange-disk-space-issues

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