Snelius
Joined 8 years ago
Joined 8 years ago
Thank you! :D
> Is pretty well trodden ground.
YES!! But the article point us to it's a 400TB+ w/o downtime migration. This is impossible. That why is looks like clickbait and advertising of a product.
400TB its about a week+ ?
> Then start replication and catch up on the delay.
Then u have a changes in the delay about +- 1TB. It means a changes syncing about few days more while changes still coming.
They said "current requests are buffered" which is impossible, especial for long distributed (optional) transactions which in a progress (it can spend a hours, days (for analitycs)).
Overwall this article is a BS or some super custom case which irrelevant for common systems. You can't migrate w/o downtime, it's a physical impossible.