navision design question

[ikke]

I need to implement a solution for a 40-user company.
They want a sbs 2003 server premium (so that is exchange + sql)
They want to run navision locally + remotely.

What would be a good design for this case?

1 sbs 2003 premium: exchange + sql
- OS on 2x 72GB hd Raid 1
- 3 x 72 GB hd's in raid 5 for the data

1 server 2003 std for TS + navision
- 2x72gb in raid 1 for the OS
- 2x 140 GB in raid 1 for the navision + sql?

microsoft advised me to implement 3! servers:
- 1 sbs 2003 + exchange std
- 1 TS server
- 1 Navision server

I wonder what is the best solution for this case.... .

How many servers?
what needs to be installed on the servers?
what are the best raid configs?

thank you!

[Atvar]

Which database (native or SQL) are you using for Navision?

The design goal should be to provide the maximum amount of system resource
to Navision within the contrains of your IT budget. If a server is
configured to handle multiple task, then any of those task does not have
access to 100% of the system's resources.

Avoid the use of RAID 5 in transaction processing systems. RAID 5 has the
worst write performance of the standard RAID levels. RAID 5 is best suited
to file & print servers or archival systems where write performance is not
critical. Use RAID 1 or RAID 10.

The more drives the better. The idea is to get as many drive platters and
head handling the data. Instead of a RAID 1 (2 x 140 GB), consider RAID 10
(4 x 72 GB), or even better RAID 10 (8 x 36 GB).

If using SQL place the transaction log on its own DEDICATED RAID 1

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Atvar