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Locating Large PST Files in Two Steps


Big files taking up too much space? One file type you can target for attention is the PST file created by Outlook. PST files can grow extensively in the hands of email hoarders. (At least they’re not printing out every email they get anymore, right?)  

To find which computers have large PST files (or really, any large files) you can set up scans and reports to help you locate those computer that have these large files and see exactly where they’re located. 

Now, you’ll need PDQ Inventory Pro features to use all of these steps. Not to worry if you don’t currently have Pro mode (or higher) you can get a free trial key for PDQ Inventory Pro. (Download PDQ Inventory first here.)

1. Set up a Scan Profile 

Go to File>Preferences>Scan Profiles>Add, then give it a name and description. Next Add a File scan profile. You may either specify the C: disk or you can scan all disks and all sub directories. Use your judgment as to where you would like the scanner to search. The more disks and directories you scan, the longer it will take you to get scan results.

In file patterns enter: *.pst, or any other substitute for the file of your choice, or add multiple file patterns (one per line) to search for multiple file types. Click OK and your scan will be underway.

2. Set up a Report 

Once you’ve allowed the scan time to complete, you’ll need to build a report to view the data. Go to  Report>New Report>Basic. Make sure you’re in the Design screen. Here you’ll name your report and give it a description. The first tab will be Columns where you will specify the information you would like to display. We would suggest the following:

Then under the filters tab, create two filters. One for files containing .pst and one for files greater than (in this case) 50000000 bytes. 

Now you’re ready to run the report which will let you know which computers and where on those computers files are located.

You can also watch this video tutorial below which follows these steps. 


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