Something weird happend today.
4/6 miners lost connection to antpool, probably around the same time. 1 of the 4 are hosted in another part of town, with another ISP aswell.
All the miners have the same config.
The GUI also reported that they where hashing at 300 GH/s (S7's), with no alive pools.

After a quick reboot they are back at 5TH/s.

FYI.

Edit:

The two that didn't lose connection, kept hashing as normal @ Antpool during all this.

PS: I could hear _1_ single beep from the miner before this happend. Kinda sounded like the same alarm you get when you lose internet connection, except it was aborted after the first beep.