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Scheduled Downtime on Thursday 7/31/14

post #1 of 21
Thread Starter 

Just a heads up, around 1 PM EDT (10 AM Pacific) we will be down for up to two hours. The site is being transferred to a new, more robust data center and will be down briefly for the migration. 

post #2 of 21

Someone should go to TGR right now and post a thread "Is EpicSki down 7-31?"

post #3 of 21

I'm surprised they are not doing this at night.   Start at 10pm and be done by midnight if all goes well... if not stay up all night and get it done by the time AM traffic hits.

post #4 of 21
Thread Starter 

I say two hours, but they're hoping to have it done in a few minutes. It's the beginning of August on a skiing site I'm sure they're not terribly worried about the marginally larger impact of doing it at midday. 

post #5 of 21

I work in the dot-com industry.  When we can, we often plan maintenance windows during the day.  This allows us to have more people with their wits about them if/when something goes wrong.  And, it leaves the overnight for the really and truly epic disasters.

post #6 of 21
Quote:
Originally Posted by Xela View Post And, it leaves the overnight for the really and truly epic disasters.

Jinx!

post #7 of 21

Y'all are lucky you are not on my team.  I'd make you stay up all night... then ski bumps the next day.  :)  

 

Seriously, there is good reason you don't see many businesses closing down for repairs during peak hours, big or small, online or offline.

post #8 of 21

tball, I agree that no serious online business plans downtime during business hours.  Realistically, that means never, as business is 24x7.  Even if customers are asleep, Googlebot is not, and you don't want Google to see that your site is down.

 

Basically, that means putting money into extra servers so the old and new can be running side-by-side.  Then, there's a clean cut-over.  Assuming all goes well, nobody complains.  That's why it's called a maintenance window and not down-time.  If things don't go well, it could be as simple as reverting back to the old.  Otherwise, see my previous post.

 

If the consequences aren't great and there's no pile of money for extra servers, down-time is the name of the game.  It's riskier, though, as the new setup can't be pre-tested in its final configuration.  Also, the exact details of reverting can't really be tested in advance.  Doing this at night can make sense.

 

There are many more variables and possibilities, but those are two extreme examples.  Virtualization is an interesting approach, but the flexibility it provides doesn't come for free.

post #9 of 21
This thread is suddenly feeling WAY too much like work.
post #10 of 21
It's not like this place is mission critical. Why should they lose sleep?
post #11 of 21

It's not mission critical, but it is a business.  They are replacing the huge freezers at my local Costco with even huger freezers, and doing all the work at night from what I can see. 

 

Quote:
Originally Posted by Xela View Post

 

If the consequences aren't great and there's no pile of money for extra servers, down-time is the name of the game.  It's riskier, though, as the new setup can't be pre-tested in its final configuration.  Also, the exact details of reverting can't really be tested in advance.  Doing this at night can make sense.

 

 

Yep, exactly.  I spent the better part of a decade with a system like that, so lots of sleepless nights.   Couldn't justify the cost of completely redundant systems or virtualization.  We only had to roll back a few times, which pushed a normal midnight bedtime to maybe 2am.... except the time the roll back didn't go so well and it took until daylight to get the pieces put back together.   On the other hand... I probably would have got more sleep if the business was owned by a big public company (like Vail here) rather than myself.

post #12 of 21
Thread Starter 

Besides we're talking about a migration to another data center, not a platform upgrade here. Our platform upgrades only take the system down for under 5 minutes. 

post #13 of 21
Quote:
Originally Posted by tball View Post
 

It's not mission critical, but it is a business.

 

And as a business, people are free to go elsewhere if the service is deemed to be sub-standard.  I don't think anyone really cares..think anyone will leave??  :dunno  Probably not..

post #14 of 21

Well now, I'll be the first to admit that I liked it better when the system had big down time while we were sleeping, but we haven't had any big down times for some time and the folks who are making this big transition seem to have a plan.  

 

Something I have always thought was super funny is that the biggest traffic numbers on EpicSki tend to be during working hours.  Perhaps there will be increased productivity in America on Thursday....at least for a couple hours... :D

post #15 of 21

Are we there yet?

post #16 of 21
Thread Starter 

I got a message that it was delayed by a few minutes, not sure if it's gone yet or not. I just got in. 

post #17 of 21

Prepare for the worst but hope for the best. 

post #18 of 21
It said a few minutes back it was down. They must be done.
post #19 of 21

It was down for me a little after 10:00 AM.  Its up now so that seems to have been somewhat painless. :dunno

post #20 of 21
Thread Starter 

Yep we were migrated and it only took a couple minutes. Like I said 2 hours was worst case scenario. 

post #21 of 21

Glad to hear it went smoothly!

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