4 ms·
I believe the expectations of having 0 downtime was not expressed until the day of the transfer.
by ianhawes 6y ago
I believe the expectations of having 0 downtime was not expressed until the day of the transfer.
- dna_polymerase 6y agoIn addition to that the customer runs a single server but expects the guys to maintain a property not even feasible at Google scale: Zero downtime. Overall the whole thing was just ridiculous, but luckily the customer got a nice bill in the end.
- pc86 6y agoTo be fair, Google maintains zero downtime for small time scales like this a lot. Most of the time, actually.
- sokoloff 6y agoI’m having a hard time following what “zero downtime most of the time, actually” really means. https://m.youtube.com/watch?v=IKiSPUc2Jck&t=81s https://m.youtube.com/watch?v=IKiSPUc2Jck&t=81s
- im3w1l 6y agoIt means that downtime is chunky.
- buran77 6y ago> zero downtime for small time scales... Most of the time I read it as "if you take small enough discrete time intervals they won't overlap with any downtime". Or in other words "no downtime between downtimes". Yes, it's very in line with your video.
- kevincox 6y agoAre you talking about Google Compute Engine? In that case yes, because by default VMs are live migrated between physical hosts. This can be done for schedule maintenance or upon signs that the machine is likely to fail. Furthermore there are no physical disks for a GCE VM which is one of the more common failure points. The result of this is that GCE VMs often survive for months or years without downtime. Note that the SLA allows more than 3 hours of downtime per month. https://cloud.google.com/compute/sla https://cloud.google.com/compute/sla For physical servers the uptime is typically quite small. Of course Google isn't optimizing for server uptime so it isn't fair to say "well even Google can't do it".