Let's not go comparing apples and oranges.

 

What Outlook reports on the client side is different than what ExPTA reports
on the server side. An Outlook-reported latency of 2500 ms is far different
than an ExPTA reported latency of 100 ms. If ExPTA is reporting 100 ms or
higher LDAP latency for more than 10 minutes, then your provider has a
serious AD slowdown (for example, OpsMgr reports that as a critical failure,
50 ms or higher LDAP latency for more than 10 minutes is reported as
"yellow" - potential problem). ExPTA should see 20 ms or lower on average
for LDAP lookups.

 

Exchange expects drive latencies to also average 20 ms. 226 ms is an
indication of a very overworked drive and may be an indication of a poorly
designed storage subsystem.

 

Now, in terms of "archiving"; if you want, you can do that yourself - create
a folder and move items to it. All you want to ensure is that items are not
in the critical folders, as I mentioned earlier.

 

Next, if they are telling you that, in the same data-center, they have to do
an export-import operation to move mailboxes to a new server, they are just
blowing smoke up your as.well, you get the idea. Move-mailbox wizard works
just fine cross-forest as long as you have name resolution and all ports
open.

 

Exchange 2007 with sp1 has I/O improvements that AVERAGE between 400% - 800%
improvement (depending on usage patterns). Just moving to Exchange 2007
could potentially make all your performance problems disappear.

 

Sounds to me like your ASP isn't very customer focused. It might be time to
look at a new one.

 

Regards,

 

Michael B. Smith

MCITP:SA,EMA/MCSE/Exchange MVP

http://TheEssentialExchange.com

 

From: John Gwinner [mailto:[EMAIL PROTECTED] 
Sent: Thursday, August 21, 2008 7:58 PM
To: NT System Admin Issues
Subject: RE: Just HOW BIG are your Exchange mailboxes, white screens, and
Directory access times

 

Thanks Michael - so I assume this applies to both public folders as well as
individual mailboxes (as some of the KB articles implied Public folders,
although it didn't exclude mailboxes of course).

 

I did a search on 'mailbox size' and didn't get any hits, but I didn't read
all of the list, I have to admit.

 

In our case, we can't upgrade so far - the ISP is saying that to go to 2007
we have to agree to a 2G limit for all mailboxes. So this isn't practical
unless they change their policy.  To do the upgrade, they want to migrate
everyone to a different AD forrest, so it's an import / export for them.

 

 

Regarding our current server, 

 

I'm surprised that 2500ms directory access is OK, that seems high.  Maybe I
shouldn't worry about it then.  The ExPTA didn't like it:

 

The maximum value of 'MSExchangeDSAccess Domain
Controllers(DS005.somewhere.local)\LDAP Search Time' is beyond the error
threshold of 100 ms. The measured value is 437.67 ms.

The average value of 'MSExchangeDSAccess Domain
Controllers(DS001.somewhere.local)\LDAP Search Time' is beyond the error
threshold of 50 ms. The measured value is 154.17 ms.

 

(etc . for 5 directory servers)

 

Drive latencies are high also:

SMTP drive: Maximum '\LogicalDisk(C:)\Avg. Disk sec/Write' should be less
than 50 (0.05 ms). The measured maximum value is 0.226 (226 ms).

 

Our ASP doesn't offer any kind of online archiving, which would make this
all much easier.

 

           == John ==
 

 

John D. Gwinner
Director of Technology
DAZ Systems, Inc   
Oracle Certified Advantage Partner

From: Michael B. Smith [mailto:[EMAIL PROTECTED] 
Sent: Thursday, August 21, 2008 4:20 PM
To: NT System Admin Issues
Subject: RE: Just HOW BIG are your Exchange mailboxes, white screens, and
Directory access times

 

As I wrote, just on Monday, in this mailing list:  J

[John D. Gwinner] .

 

 

 

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