Selecting the most appropriate solution for a MySQL HA infrastructure is as much a business and philosophical decision as it is a technical one, but often the choice is made without adequately considering all three perspectives. When too much attention is paid to one of these aspects at the cost of the others, the resulting [...]
A couple of weeks ago one of my colleagues and I worked on a data corruption case that reminded me that sometimes people make unsafe assumptions without knowing it. This one involved SAN snapshotting that was unsafe. In a nutshell, the client used SAN block-level replication to maintain a standby/failover MySQL system, and there was [...]
I’m happy to extend a warm welcome to two new members of the Percona team.
First is Yves Trudeau, about whom I can say many things:
One of the top MySQL Cluster (NDB Cluster) experts in the world.
An expert on all things High Availability, including DRBD and Heartbeat.
Many years of experience with Huge Data.
Half of the Waffle Grid team.
A really nice person!
Yves joins us after a tenure of several years as a senior consultant at Sun/MySQL. Together with Matt Yonkovit, he plans to work on WaffleGrid (…
It seems pretty common to find customers install DRBD for the wrong reasons. There are many pros/cons to compare DRBD to replication, but I’ve managed to cut down my spiel I give to customers to these two points: DRBD’s aim (assuming replication mode C) is to provide 100% consistency, and then as much uptime as [...]