Having lots of messages in one folder will cause noticeably sluggish
response when users do things like search, change views or click on
column headings to change sort orders.

Ed Crowley MCSE+Internet MVP kcCC+I
Tech Consultant
hp Services
Protecting the world from PSTs and Bricked Backups!


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Andy Grafton
Sent: Tuesday, July 09, 2002 6:25 AM
To: Exchange Discussions
Subject: RE: One Folder (was Unlimited Quotas)


James I guess it depends on your situation as well as best practices.

I've noticed no particular performance degredation with people having
10000+ messages in their inbox, or another folder [a l� my Exchange List
Archive folder...] when they are running on a fast (LAN/10Mbit+) link.  

Users connecting via slow links (<=128Kbit) wait for large folders to
appear in Outlook, and it can be unfeasible for them to stack too many
messages into one folder.  Obviously, attachments are a problem in this
situation.

Same rule but with lower numbers goes for items in the normal file
system when viewed over slow links.

Presumably if I got enough users on the end of a 10 or 100Mbit link to
the server the performance would degrade if they all have mailboxes with
large numbers of items or regularly move big attachments to and from the
server.

I keep attachments out of individuals mailboxes if possible because with
our policies they a) they are not available to others and b) we would
hit the 16Gb limit on the mail store in Ex2K std. version PDQ.

One reason for us setting a low(ish) limit on mailbox sizes to to
encourage people to shift mails into public places, or act upon them and
file them for reference.

Some of our other sites use the public folder store as a file system
with no significant performance degradation outside the increased
traffic to and from the server, and the obvious requirement for an
Enterprise edition of Exchange and increased disk space.  Our servers
are pretty capable for the users we have - if you were running a PII 233
with 256Mb of RAM it would obviously croak under any kind of load and
you'd have to set some more facist policies.

An OWA front end server seems to read the messages on a per-page basis
from the back end server which that user is hosted on.  Thus if your
front server is separated from the back end by a slow link, the
performance hit with folders which have large numbers of messages does
not appear as great to be as great as when using the full Outlook client
over a slow link.

All the best,

Andy

Creuna Danmark A/S
Snaregade 10
1205 K�benhavn K
Denmark

Tel : +45 22 68 58 23
Fax : +45 70 20 72 42




> -----Original Message-----
> From: James Liddil [mailto:[EMAIL PROTECTED]]
> Sent: 9. juli 2002 14:10
> To: Exchange Discussions
> Subject: One Folder (was Unlimited Quotas)
> 
> 
> OK now that that has been beaten to death, I now want to try
> and understand the aspects that effect performance (or 
> perceived performance) for users.  So the policy will be set 
> at a certain large number for storage. Now will exchange run 
> better if users use folders or does it not matter and I 
> should just let them use the inbox for everything?  And along 
> those same lines is keeping all their attachments in exchange 
> a bad thing from a performance standpoint. Again I only want 
> to consider this from the view point of performance and what 
> is "best" to keep exchange running well.  If using only an 
> inbox has a negative impact then and only then is it 
> justified to spend money for training on the use of folders. 
> Never mind making folks more productive (the one box vs. a 
> well organized file cabinet).  
> 
> Jim Liddil
> 
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