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Content Tagged with ha + availability

Raid is obsolete

In a lot of environments.

Peter gives a nice overview why you don't always need to invest in big fat redundant hardware.

We've tackled the topic last year already ..

Now I often get weird looks when I dare to mention that Raid is obsolete ..people fail to hear the "in a lot of environments"

Obviously the catch is in the second part, you won't be doing this for your small shop around the corner with just one machine. You'll only be doing this in an environment where you can work with a redundant array of inexpensive disks. Not with a server that has to sit in a remote and isolated location.

Next to that there are situations where you will be using raid, but not for redundancy, but for disk throughput.

MySQL: Planet MySQL

Installing DRBD on Hardy Part 2

The second entry which demonstrates how to setup HeartBeat on Hardy

drbd: del.icio.us tag feed

Configuring Xen HA with Heartbeat for SUSE Linux Enterprise Server

Learn how to make a Heartbeat cluster with SUSE Linux Enterprise by creating a SAN for high availability storage for Xen virtual machines.

Xen: http://del.icio.us/rss/tag/xen

Replication is dead, long live Replication!

Brian Aker has found general agreement with his post: "The Death of Read Replication".

Arjen Lentz says "I think Brian is right...", and Frank Mash confirmed: "what Brian says about replication, caching and memcached is very true".

Just like Video killed the Radio Star it looks like maybe Memcached killed the Replication Hierarchy!

But of course, Brian and others are talking about replication for scaling reads.

In my session on PBXT next week at the conference I will be talking about how we plan to use synchronous replication to produce an HA solution for MySQL at the engine level.

I will also discuss how some flexibility in the PBXT architecture makes it possible to actually scale writes efficiently as mentioned by Arjen in his blog.

So don't miss it:

Inside the PBXT Storage Engine
10:50am - 11:50am Thursday, 04/17/2008
Ballroom G

PrimeBase-XT: PBXT Blog

conntrack-tools: userspace tools for manging conntrack-state for high availability

The conntrack-tools are the userspace daemon so-called conntrackd and a command line interface known as conntrack. Both tools let system administrators interact with the Netfilter Connection Tracking System from userspace.

netfilter: del.icio.us/tag/netfilter

MySQL AB :: DRBD for MySQL

DRBD for MySQL is a high availability solution that combines MySQL, Linux Heartbeat, and Distributed Replicated Block Device (DRBD) so organizations can cost-effectively deliver High Availability (HA) database solutions. Implementing MySQL with these open

drbd: del.icio.us tag feed