PST file compression ratio

Status
Not open for further replies.
U

U0pNUA

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
 
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.

---
"SJMP" <SJMP> wrote in message

news:634A952E-EDBD-4D51-A181-9EF07A8F5170@microsoft.com...
> 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
 
How much compression you achieve will depend not only the on the archive type you create, but on the application you use to compress it and the settings you use. If you want to compress something to use as little space as possible, you should definitely use 7z. You can even crank up the compression settings to save even more space, although it will take longer to compress and decompress. Most compression tools have settings to allow you to achieve a higher compression rate at a compromise of slower compression/decompression times and more RAM usage.
 
Status
Not open for further replies.
Similar threads
Thread starter Title Forum Replies Date
W Outlook 365 File access denied attempting to import .pst Using Outlook 6
P Copying ALL calendar entries from Calender in PST file to IMAP OST file? Using Outlook 1
L Restoring Outlook from backup pst file Using Outlook 5
HarvMan Exporting IMAP OST file to PST Using Outlook 5
L Article on merging pst file Using Outlook 1
R Problem moving file “Email folders.pst” to new PC Using Outlook 5
D Outlook 2016 Unable to load Outlook data pst file Using Outlook 5
K Need to convert .mmf file to .pst format Outlook VBA and Custom Forms 7
B Can I create a local PST file for SPAM on a drive that is usually disconnected? Using Outlook 3
P Outlook pst file is too huge with POP3. How to save more space? Using Outlook 4
I Outlook 365 - import/attach PST file that used POP3 Using Outlook.com accounts in Outlook 0
P PST file is getting huge under POP 3 Using Outlook 2
M Export-Import .pst file problems Using Outlook 2
L Cannot open PST file for first session each day Using Outlook 6
S What's in a PST file? Using Outlook 1
L What are the risks of opening an Outlook 2016 .pst file in Outlook 2010? Using Outlook 4
RBLampert Assigning a newly (re)created e-mail account to a specific .pst data file Using Outlook 2
DariTrevino MIcrosoft Outlook PST file cannot repair Using Outlook 1
P how to remove unwanted PST file default categories assigned to many calendar entries Using Outlook 7
B What is best IMAP .OST file to .PST file converter solutions? Using Outlook 1
semnaitik Is it possible to recover content from a 0KB PST file? Using Outlook 3
R How To Repair OST File & Export OST File to Outlook PST ? Using Outlook 3
I Flagged emails in pst file corrupt to do list Using Outlook 12
O How to display number of items per .pst file Using Outlook 7
D PST file is needed Exchange Server Administration 1
C scanpst.exe doesn't repair .pst file Using Outlook 1
J Outlook 2016 - use of old PST file - will all emails be downloaded or only latest?? Using Outlook 1
Q Script to create a pst file for Archiving Using Outlook 1
S Outlook does not open the .pst file created by the Outlook Using Outlook 5
N How to delete default folder "Contacts" (olFolderContacts) in a .pst file Using Outlook 8
Gunny NFOhiway Outlook PST file and Rules Using Outlook 1
chai1949 pst file in outlook 2016 Using Outlook 3
J create .pst data file for new gmail account Using Outlook.com accounts in Outlook 1
Diane Poremsky To Secure Your Personal Folders (*.pst) File Using Outlook 0
S Outlook 2003 to Outlook 2013 pst file Using Outlook 5
Diane Poremsky Remove a password from an Outlook *.pst File Using Outlook 3
P Extra PST File Using Outlook 2
C Converting OST to PST File Using Outlook 3
P Recover / Extract Rules from standalone PST file creating RWZ file Using Outlook 2
O Missing guide "Move an Outlook Personal Folders .pst File" Using Outlook 4
R Locked pst file Using Outlook 2
I Random Chinese characters in email copied from a pst file. Exchange Server 2016 Public Folder Exchange Server Administration 1
B Relocating archive.pst file Using Outlook 6
T OST vs PST file size Using Outlook 2
Diane Poremsky Can you store a pst file on an SD card? Using Outlook 0
U .pst file error at opening outlook Using Outlook 1
Diane Poremsky How to repair a damaged Outlook Personal Folders file (pst) Using Outlook 0
Diane Poremsky Convert an Offline File (.ost) to a Personal File (.pst) Using Outlook 0
S How to do I convert OST file to PST? Exchange Server Administration 3
B No permission to access Outlook.pst file Using Outlook 1

Similar threads

Back
Top