That is an insanely expensive system. Yes, there are some "top of the line" components, but they are really unnecessary. For example, you pointed out the expensive SAS drives. SAS drives are obsolete in my experience. The 10K is supposed to increase seek time, but compared to an SSD it's a drop in the bucket.
Redundant PSU is only necessary if you REALLY need that 24-hour uptime. It's cheaper to buy two regular PSUs (by a lot) and simply switch them if it goes out.
Not a lot of RAM for this powerhouse of a system, kind of strange.
3 10 packs of Server 2016? Are you running 30 virtual machines? With 16GB RAM, I can say you will not do this successfully.
Onsite service after problem diagnosis is kind of nice, free parts replacement for 5 years.
HW / SW tech support and assistance is jacked, it's basically just customer support for 5 years. Take that out for sure.
Motherboard/processor is good, but for highly threaded workloads EPYC would be cheaper and faster. In fact, Threadripper would be more than enough, as they go up to 16 cores irc.
I actually work for a company that builds custom servers. We actually use a LOT of dell PCs for workstations, but I wouldn't touch prebuilt servers anymore. Markup is insane.
If you're serious about getting a powerhouse, contact me via PM and I can set you up to get one built and shipped to you much cheaper.
A rough rundown of a Threadripper system:
1900X (8 core, 16 thread, roughly equivalent to your quote for Intel)
5 x 1TB SSD
ASUS PRIME X99 Motherboard
Phantex case (can be anything, really. EATX is good though.)
Server 2016 with 5 CALs (includes 2VMs, not sure how many you need...)
Corsair 750W PSU (good to be over your power requirement)
Come out to roughly (with markup, assembly costs) $5000.
PSU can be switched out for a redundant for about $400-$450 extra. They're spendy.
Upside: Way cheaper system cost, much cheaper to replace parts in as they are widely available. Upscalable, as you can add a WHOLE LOT of parts to this system. Up to 16 cores/32 threads processor, literally insane amounts of RAM, etc.
Downside: Certain parts don't have as long of warranties. The SSDs I pick are the Samsung's with 5 year warranties, so they get to stay up there, but otherwise it's just the warranty that comes with the hardware. No remote diagnosis and such, but that's what your local tech company is getting paid for.
Had to check out of curiosity, this processor is ~50% faster than the Intel one quoted. http://cpu.userbenchmark.com/Compare...22651vsm340638