This tutorial shows how to set up a high-availability storage with two storage servers (Fedora 12) that use GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage servers. The client system (Fedora 12 as well) will be able to access the storage as if it was a local filesystem.

Data recovery is the process of retrieving data from corrupted or damaged storage media when it cannot be accessed. The storage media in question will often be a hard disk, but it can also be removable media such as CDs, DVDs, Blu-rays, and storage tapes. There are many different reasons why a system administrator may need to use data recovery tools.

cpulimit is a simple program that attempts to limit the cpu usage of a process (expressed in percentage, not in cpu time). This is useful to control batch jobs, when you don't want them to eat too much cpu. It does not act on the nice value or other scheduling priority stuff, but on the real cpu usage. Also, it is able to adapt itself to the overall system load, dynamically and quickly.

With the Linux 2.6.34 kernel development cycle getting into swing, we have decided to provide a historical look at the Linux kernel performance, we have ran some fresh benchmarks going back to the Linux 2.6.24 kernel and ending with the recently released Linux 2.6.33 kernel.

In December we wrote that Ubuntu 10.04 already shortened the boot time, which has been a great focus amongst Canonical and Ubuntu developers as they strive for a ten second boot. A lot has changed since that article.

This document describes how to install a Proftpd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota with this setup.

I certainly don't mean to imply that OpenBSD is a horribly insecure operating system - it isn't. I do however need to highlight that OpenBSD is quite far removed from a secure operating system, and will attempt to justify this position below.

GNU Midnight Commander (MC), Vifm and Last File Manager (Lfm) are 3 visual file manager applications for the Linux console. All of these 3 applications will remind you of Norton Commander, but each has something special.