A couple of years back, I created a (very basic) script to help estimating the size of an Exchange Archive by looking at the age of a message and comparing it to time periode you envision to use in the the retention/archive policy. Originally, I believe I had posted the script on my personal OneDrive, but the file since seems to have gone missing.
After a few requests, I decided to upload the file to Github for a few reasons:
- You can download it again.
- People can contribute to improve the script. As I mentioned earlier, it was a very basic script and not super efficient. Unfortunately, I lack the time to spend much time on it, but that doesn’t mean others can’t and help the community by doing so.
You can find the script here, now. (https://github.com/mvanhorenbeeck/EstimateExchangeArchiveSize)
Please note the script is provided as-is with no warranties. I suggest you test the code before trying it in production as I had to pull this source file from an old repository and it may or may not be the same version as I posted originally.