Server Density Blog

SLAs are generally financially irrelevant because they typically cap any compensation at the total spend under the claim period e.g. if you spend $100 a month you can claim up [...]

On 15th March I presented about scaling teams at DevOpsDays London (writeup / slides) and we sponsored the conference, including some sponsored tweets. There’s always a lot of activity around [...]

Back in the old days when you had physical servers hosting your website, a hosting provider would have to take physical steps to suspend a customer’s account – blocking network [...]

This post is based on our talk at Puppet Camp Ghent. See our separate page for all our talk videos and slides about how Puppet is used to manage the [...]

Earlier this month there were a couple of good blog posts (here and here) with some suggestions and considerations for handling on-call schedules. This is something every company has to [...]

Problems with storage systems, particularly cloud network storage like Amazon EBS or a shared NAS, are notorious for causing complex outages which take a long time to resolve. I liken [...]

You’ve been woken up with an alert and after getting to your laptop the first step is to find out what is going on. Ideally, you have quite specific alerting [...]

We use a fairly simple concept in our daily system operations that we call canaries. This is modeled off the use of a miner’s canary to detect toxic gasses before [...]

We try and have our engineers speak at a range of conferences during the year and a lot of those have happened in the last 2 months. Here’s a quick [...]

Everyone knows that a backup isn’t complete until it’s been fully restored and verified, regularly, but I wonder how many people extend that testing to other portions of their infrastructure [...]