We all use (or at least we should all use) an Anti-Virus (AV) product on our computer to protect it from malware (yes, that includes you Mac and Linux users as well). Rogue Anti-Malware is on the increase and users should be wary of what they install, but if we do choose a big vendor and pay money for it, does it protect our machine from all threats? Well the answer is no. No security product can be 100% secure, but how secure are they actually? There have been a number of recent surveys and their results show that things are probably improving, but there's still a significant gap. AV-Comparatives.org showed that in their tests, G Data was the best with a 99.8% detection rate of known malware, with Norman being the worst of the 16 at 84.8%. Known malware was taken to be malware from a period of one year that ended 8 months prior to the test. This is important to stress; these weren't new malware instances, these were old known malware that all vendors will have seen and had...

We all know that when we want a highly available and reliable server we install a RAID solution, but how reliable actually is that? Well, obviously, you can work it out quite simply as we will see below, but before you do, you have to know what sort of RAID are you talking about, as some can be less reliable than a single disk. The most common types are RAID 0, 1 and 5. We will look at the reliability of each using real disks for the calculations, but before we do, let's recap on what the most common RAID types are. Common Types of RAID RAID 0 is the Stripe set, which consists of 2 or more disks with data written in equal sized blocks to each of the disks. This is a fast way of reading and writing data to disk, but it gives you no redundancy at all. In fact, RAID 0 is actually less reliable than a single disk, as all the disks are in series from a reliability point of view. If you lose one disk in the array, you've lost the whole thing. RAID 0 is used purely to speed up dis...