dear all,
somehow i've managed to get in to a philisophical discussion about the
best place to store messages. my opinion has always been that the IS (or
an OST) is the place. my colleague prefers PST's.
i think there was a thread in days gone by which discussed the pros/cons,
or maybe there is a FAQ on this.
off the top of my head, the "bad things" about PSTs are:
- loose single instance store
- increase storage requires (rtf + plain text)
- exposed to corruption and performance degradation if pst > 512Mb
- loose ability to manually scan for PST-resident virus infections
- increase bandwidth - eg 10 messages over WAN to 10 clients, rather than
1 message over WAN to server, then 10 messages to clients over LAN
increased reliance on scarce/expensive, inherently less reliable WAN
capacity
- loss of access to mailbox manager functionality
- security exposure - lost notebook with PSTs much more likely to give
access to stored email than server resident mailbox
- more to configure in profile
- not all rules will work (server side vs client side)
- if a machine crashes, and the PST is in the default location, mail goes
with it. likewise, finding and saving the PST/PAB is another thing to do
during PC cascades
- storage is more efficient with automatated whitespace recovery on the
IS, but no way to centrally manage PST compaction
the "good things" i can think of are:
- users become responsible for their own storage limits (do they really ?
will they not just lob their PST on to a network drive and make the file
system backup bigger, rather than the exchange server backup ?)
- if the PST is on a network drive, mailbox-by-mailbox restores are
relatively easy.
- In moving mailboxes from one org to another, one of the first steps is
to get user messages out in to a PST. If you work with PSTs anyway, you�ve
got a head start.
Paul
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