Sizing Guide Exchange Server 2003 - Fujitsu

White Paper Sizing Guide Exchange Server 2003 Version: 4.2, July 2006
If you equip the PRIMERGY TX150 S4 with a more powerful processor, e.g. a Pentium D 820, and main
memory of 2 GB, it is by all means possible to manage up to 200 Exchange users. However, the Small
Business Server 2003, which is limited to 75 users, is no longer sufficient, the products Windows Server
2003 Standard Edition and Exchange Server 2003 Standard Edition should be used. The database for the
mailboxes of 200 users will with a maximum mailbox size of 100 MB grow to approximately
100 MB × 200 users × 2 = 40 GB. Therefore, the VXA-2 should be used as backup medium, as otherwise
more than one tape may possibly be required for a total backup.
A server in the small and medium-sized enterprise (SME) environment or in branch offices is frequently also
used as a file and print server because it is often the only server on site. For simple print services it is
sufficient to have a somewhat more powerful processor, e.g. Pentium D 940, and more memory. However,
for additional file-server services that go beyond occasional accesses the hard disks are inadequate. In this
case, at least two further hard disks should be added in a secure RAID 1 array, which means the extension
by a PRIMERGY SX30 with 14 additional hard disks is possible. The PRIMERGY SX30 is available as a 1-
or 2-channel version. Which PRIMERGY SX30 version is preferred depends on the field of application. In the
SME environment, where - in addition to the RAID arrays for the Exchange databases - further RAID arrays
are built in the PRIMERGY SX30, the 2-channel variant with an appropriate RAID controller is
recommended.
RAID 1
OS
RAID 1
Queues
RAID 1
AD
RAID 1
Logs
In case of more disks and more memory this configuration can as a dedicated Exchange Server by all means
serve up to 700 users. In this case, it is advisable to use a 1-channel PRIMERGY SX30 and, if necessary, a
second PRIMERGY SX30 as a supplement if additional data volume is required for the Exchange databases.
The above picture shows a sample configuration with a 2-channel RAID
controller and one PRIMERGY SX30.
The PRIMERGY TX150 and PRIMERGY SX30 are alternatively also
offered as rack solutions. The operational area would then be less as
an office server and more as a dedicated server in a data center or with
an application service provider (ASP).
RAID 1+0
Store
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RAID 1+0 or RAID 5
File Sharing, etc