Will this increase my Virtual private Server failing rate if i :-

install Microsoft Window Server 2008 Enterprise

install SQL server enterprise 2008

install IIS 7.5

install ASP.Net Mvc 2

install Microsoft Exchange << should live inside MWS2008 ? or standalone without OS?

install Team foundation server << should live inside MWS2008 ? or standalone without OS?

on one mini VPS with specification of

DELL Poweredge R710 shared plan

DDR3 ECC RAMs 16GB and --> 1GB for this VPS

using DELL PERC 6i raid controller (this thing alone about 1.5k-2k)

and the SAS HDD (15K RPM) (146GB) --> 33GB to this VPS

each hdd is freaking fast over 300MB read / write possible with proper tuning

the motherboard is a DELL and it has twin redundant PSU (870watt 85%eff)

its running on Intel Xeon 5502 (Quad Core) x2 so about 8 physical proc (fairly share)

is there any ruler to measure for this about one VPS can only install what what what service ?

because of my resource is limited =.@ may i know if it is install in this way,maybe it seem like defeat the way of "VPS"... what will happen ? or any guideline on this issue (fully configuring the window server 2008 R2) ? Thx for reply