RE: Exchange server 2003 RAM utlization
- From: Praveen Ramaswamy <ramaswamy_praveen@xxxxxxxxx>
- To: "\[ExchangeList\]" <exchangelist@xxxxxxxxxxxxx>
- Date: Fri, 9 Sep 2005 23:12:55 -0700 (PDT)
Thanks Chris for your detailed explanation.I will check this out. However i
cannot dedicate one physical drive just for page file because of the hardware
limitation. I already have RAID 1 for OS and applications and RAID 5 (3 disks)
for exchange database. And my server can take only 5 disks.
Regards
Praveen R
Chris Wall <Chris.Wall@xxxxxxxxxxxxxxxxxxx> wrote:
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Praveen,
Here is what I do and it works great for our organization?
(You can run the Exchange Best Practices Analyzer on your server ? be sure to
obtain the latest version ? and it should verify that you need to edit your
memory settings)
Verify that you have implemented the /3GB switch and the /USERVA switch on
your Exchange 2003 server
Refer to KB 815372 and KB 823440 for this information ? read the KB
articles carefully!
The /3GB and /USERVA switches should not be used on Bridgehead, Front End
servers, or on DC?s that have Exchange installed on them
You can utilize up to 3 GB of Ram on the exchange server ? More will not
help. I would recommend that you have 3 GB?s of ram on the machine
I have created a separate Drive for Page Files on all of my Exchange
servers. I set up the drive space for 5 GB?s (P: Drive) and then manually
setup the server to use this drive space for the Page Files.
This is done by opening the properties of ?My Computer?
i. Advanced
Tab
ii. Under the
?Performance? section, click ?Settings?
iii. Under the
?Virtual Memory? section, click ?Change?
iv. Select the
new P: drive (or the 5GB drive space that you set up specifically for the Page
File) and select custom size. Set it for ?Initial Size: 4096 and Maximum Size:
4096?
v. Click Set
vi. Select the
C: drive (or wherever your current Page File resides) and select ?No Paging
File?
vii. Click Set
viii. Exit
ix. Reboot your
server for the changes to take effect
Hopefully this will help your performance.
Chris
---------------------------------
From: Praveen Ramaswamy [mailto:ramaswamy_praveen@xxxxxxxxx]
Sent: Friday, September 09, 2005 9:43 AM
To: [ExchangeList]
Subject: [exchangelist] Exchange server 2003 RAM utlization
http://www.MSExchange.org/
Hi,
I am using DELL 2850 dual CPU system Xeon, 2 GB RAM,with RAID 5 for databse
storage and RAID 1 for mirroring. I have exchange ent 2003 with sp1 on windows
2003 ent . I have around 4000 mailbox on this.
most of the time Page file utilization will be 2034 Mb out of 4 GB
most of the time RAM utilization will be 1.5 GB out of 2 GB RAM (500 MB free)
Is it recommended to increase the RAM from 2GB to 3 GB or 4GB ?? Can you please
advice.
Regards
Praveen R
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