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because of a problem with remote reboots which fails most of the time, and it's difficult to get into the co-lo site, and the ISP does not keep personnel at the building all the time. Only when someone needs to get in, or has a problem will they send someone downtown.
PITA. Suggest you look for another colo site or get a Dedicated Box somewhere where the Remote Reboots work properly. Not being able to get to your box, when you need to, is not a good thing. Bad service on the part of your ISP.
Also see if your colo site offers some sort of remote access/reboot system. Many are only a ssh (prefered) or telnet to a odd numbered port that maps directly to your systems serial port. At least you can trigger reboots and see what happens when grub loads.