1. Report on Dell Servers

2. 42 Unit Rack - $6500/rack
There is only 100$ difference between a 24U and 42U Rack.
Each UPS unit takes 5U spaces in the Rack
Includes 2 UPS Units (Each can supply power 5 units) and 2 PDU units

3. Console Switch
Less messier than a KVM

4. Server
With out the discount per unit cost is $5226. And with discount it is $3826.
Very little hard disk size compared to configuration in your .

5. Possible configuration 1
Use only half of the slots in a rack and put in only 10 units as there are only 2 ups per rack. And each ups takes 5 slots.
I did not check if it is ok to put in 3 ups’s in rack.
One can certainly add switches to external ups, but becomes messy again.
I have not included the cost of a network switch.

6. Possible configuration 1
Unit
Cost/unit
Unit count
Total Cost
42 Unit Rack
6500 1
Console Switch
1600
Server
3826 10
38260
Total
$46360
Approximately $46360/unit
With out the discount, is it ~$6300

7. Possible configuration 2
Use all the slots in the rack and put in 20 server units and 4 ups per rack. And each ups takes 5 slots. Assuming it is possible to buy 4 ups with a rack (that option does not seem to be available online ).
I have not included the cost of a network switch.

8. Possible configuration 2
Unit
Cost/unit
Unit count
Total Cost
42 Unit Rack
11298 1
Console Switch
1600
Server
3826 20
76520
Total
$89418
Approximately $4470/unit
With out the discount, is it ~$6000

9. Conclusion
As the price difference between a 42u rack and 24u rack is only 100$, its better to opt for a 42 unit rack as it leaves us with an option of expansion.