No, the pst-file is a database and is not being rewritten every time a data
is written/deleted within the pst-file. Even deletions are not directly
rewritten by all zeros nor will the pst-file grow/shrink with every
write/delete operation.

That said, make sure you've applied Service Pack 2 for Office 2007 and that
your disk can write 30MB/s or more.

--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more

http://www.msoutlook.info/
Real World Questions, Real World Answers

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"Brad" wrote in message
...
I use Outlook 2007 on Windows 7 Ult x64 with a Solid State Disk [Intel SSD
x25 (G2)] and wanted to know if the PSTs file rewrites itself each time
new
mail is sent/received? Or does it represent itself as a single file but
really have many smaller files that are mostly static w/exception of new
mail
and sent.

I ask because after NAND flash of the SSD is written once and the entire
drive is full, the drive performance becomes much slower due to the need
to
now “erase before write” as compared to a single write operation when the
SSD
was new.
If the PST is rewriting the complete 300MB+ file every time, I will move
it
to another location (non SSD ….headache though w/drawbacks).

Also, while on the SSD topic, anything on how TRIM works in Win 7?

--
Brad R