DELL MD1000 for SBS2003???

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We are building a new 2003 SBS Server solution to replace our failing
SBS2000 box - see previous post today concerning RAID, etc

We have been speaking to Dell about a solution and have a
recommendation for a PowerEdge2900 with MD1000 attached. Here is the
config:

PE2900 - has RAID 1 ( using (2) 73GB 15K drives) - for OS only using
PERC 6/i controller.

M1000 - has a total of 7 drives (146GB 15K) - this will have (2) RAID
5s (3 drives each) with (1) Hot Spare.

1. Has anyone out there used the MD1000 with SBS2003 Premium?

2. If the about is acceptable, what partitioning would you recommend
for Exchange, SQL (not currently used in SBS2000, CAD data --need
great perforamnce for these files)?

We only house 45GB of data now and only grow 4GB per year. Have 5-10
users hitting DC, Exchange, files. Exchange 2000 is at 14GB after 6
years.

Otherwise we are considering just the 2900 III with similar config and
guidance from replies on our previous post today..

Thanks
.