Is There a Way to Start A Server/Computer Remotely?

Question

We have a Server running 2012 R2 Foundation with 2 joined workstations in our office space. We travel frequently for business, and while we're away, we access the workstations remotely via RDS/RDG.  Due to the sensitive nature of our data on the
server, we have to keep the office locked and not allow anyone to have a key (we're a 2 person company).
Out biggest concern is that if the server should shut down while we're away, we currently have no means by which to restart it until we return.
I'd like to know if there's any way that we can restart the server and/or workstation remotely, perhaps with some kind of software or hardware device/expansion card.  I'd be very grateful for any/all help with this.
Capt. Dinosaur

Answer 1

Thanks for your input, Dave.
I followed the link, plus the link in the resulting thread, and downloaded the iDRAC user's guide.  According to the thread the T110 II does, at least, have the one option - BMC - that doesn't support a Web based GUI, but, according to the
User's Guide on pg 23, does provide "Server Power Control", but with the footnote caveat on pg 24, that the, "Feature is available only through IPMI and not through a Web GUI".
Given that, it sounds like it might work for me, if only I knew what the $%** IPMI is and how to use it.
Anyhoo, I pressed Ctrl+E, got into the BMC settings, and set them up - I think - but they're not very intuitive.  I'm no sure that I've actually used the correct settings in many cases.  For example; 1) for the Domain Name, I used the actual
AD domain name, but I don't know if it should be the SSL domain instead, since that's what I use for RDS/RDG access, 2) for the "Alert Destination 1" I used the server's static INTERNAL IP address, but not sure if it's supposed to be the EXTERNAL
IP, 3) for the IPV4 addresses I used the EXTERNAL IP information from my router - I think that one is correct, but not sure, 4) for the RMCP+ Encryption Key I left the default of all zeroes, 5) for the "LAN USER CONFIGURATION" I used the
defaults for Account Access (Enabled) and IPMI LAN Privilege (Admin), but for the Account User Name and Password I used the Server's Administrator information.
The problem now is that I haven't a clue as to how to test it.  Could you 'splain that at me???
Re: "Setting the system bios to restart on power up should be no problem but the UPS may be trickier as they generally do not power on if the batteries were discharged completely". 
I have the battery backup utility set to shut the machine down 2 minutes after a power failure.  They're supposed to have a 15 minute wait time, so that, hopefully, should prevent the batteries from a deep discharge.
Capt. Dinosaur