PST file compression ratio

[SJMP]

Does anyone know how much a pst compresses data when exporting a exchange
mailbox to .pst file?

Or a tool which would tell you the size of a .pst file if not compressed/ or
exported to an exchange mailbox?

Thanks
SJMP

 

[Roady [MVP]]

That completely depends on the contents on the mailbox and moreover; the
file formats of the attachments.

On average an ost-file is about 25-30% larger than the size of the reported
size of the server mailbox in Outlook. As ost-files and pst-files compare
pretty much 1:1, that is what you can expect in size.

Note that importing pst-files back into Exchange will never give you back
the efficiency of Exchange as single instance storage will no longer apply.

 

[aaronwatts]

You can use the best PST compression software to reduce the size of Outlook PST files. I recommended the program DataVare Outlook PST Compact Expert. Compacted PST files of any size can be handled by the application since it removes extraneous data and cache space. Adding folders with a large number of PST files or compressing a large number of PST files is easy. This utility can be used to compress PST files without losing any data. To try this software out for free, install the latest trial version.

Read More:- datavare.com/software/outlook-pst-compact-expert.html

 

[sophiaclark]

Using the best PST compression software. It is to use the Softaken Compress PST Tool. The application removes useless data and cache space, allowing it to handle compressed PST files of any size. Install this application's most recent trial version to test it out for free.