
I lost power to my router yesterday and I was on site so I didn't know until this morning

Now I have to ramp up again

What do you guys use to get notifications on your miners?
The amount you ramped down = the amount you'll have to ramp back up.
i.e. if you were off for 18hrs then (of course) you've only lost 18 hours of mining, so you'll have to ramp back up 18hrs to get back to where you were.
Also note that they are only the same if the pool hash rate is the same - if the hash rate increases then the ramp is shorter (and vice versa)
The ramp is a number of shares, not an amount of time, and that number is 5Nd

So the time of the ramp is dependent upon the pool hash rate.
... and something I said in IRC yesterday
... and in case that statement about the ramp getting shorter sounds confusing, don't worry it works out as expected since as the hash rate grows we 'expect' to find more blocks so it all is expected to work out the same
the 5Nd is 'expected' to be 5 blocks - of course luck has a different opinion on that - but that's what's statistically expected
