FreeBSD 7.2 Review: Improved Virtualization

Posted on in Categories FreeBSD, Hardware, News, package management last updated May 2, 2009

FreeBSD is just plain old good UNIX with rock solid networking stack. It is quite popular amongst hosting companies, ISPs, portals (such as Yahoo) and a few large financial institutions because of its reliability, robustness and performance.

A new version of the FreeBSD is scheduled for release next week (4-May-2009). A beta 2 was made available for download few weeks ago for final round of testing before the official launch.

RAID 5 vs RAID 10: Recommended RAID For Safety and Performance

Posted on in Categories File system, FreeBSD, Hardware, Linux, OpenBSD, RedHat/Fedora Linux, Storage, Suse Linux, UNIX, Windows server last updated October 22, 2008

A Redundant Array of Independent Drives (or Disks), also known as Redundant Array of Inexpensive Drives (or Disks) (RAID) is an term for data storage schemes that divide and/or replicate data among multiple hard drives. RAID can be designed to provide increased data reliability or increased I/O performance, though one goal may compromise the other. There are 10 RAID level. But which one is recommended for data safety and performance considering that hard drives are commodity priced?

Download of the day: Vmware 2.0 Virtualization Solutions Beta Software

Posted on in Categories CentOS, Download of the day, Hardware, High performance computing, Linux, Linux Virtualization, Networking, vmware last updated July 17, 2008

VMware Server is an entry-level server virtualization solution, which is proprietary, freeware software. VMware released version 2.0 beta of Server on July 1, 2008. New version provides appliance like control using nothing but a webbrowser.

andLinux – Run Windows and Linux Without Virtualization

Posted on in Categories Linux desktop, Sys admin, Tips, Windows, windows vista last updated April 16, 2008

If you cannot get rid of Windows due to application software compatibility issues, try andLinux.

Linux does everything that many users want it to, but some people have tasks that require Windows applications. You can dual-boot both operating systems, or run Windows in a virtualized environment on Linux. Alas, virtualization makes the guest OS almost useless for processor- and RAM-intensive tasks like editing videos and playing games. Now, a Ubuntu-based distro called andLinux takes cooperation with Windows to a whole new level.

=> Run Windows and Linux without virtualization

Red Hat Enterprise Linux 5.2 Beta Released

Posted on in Categories Linux, Linux distribution, News, RedHat/Fedora Linux last updated March 14, 2008

RHEL 5.2 beta has been released. Red Hat engineers backport many of the new features from later kernels to the Red Hat Enterprise Linux 5 kernel, such as support for new hardware and virtualization enhancements. This provides Red Hat Enterprise Linux subscribers with important new capabilities while maintaining stable application interfaces — so that applications continue to run after new updates are installed. And, of course, it’s always worth repeating that updates, which are released about twice a year, are included with every Red Hat Enterprise Linux subscription.

This will give our you a chance to see what your systems will be running later this year. You can grab beta version from RHN.

=> Press Release : Red Hat Enterprise Linux 5.2 Beta

Linux and Open Source Digital Forensics Tools / Software

Posted on in Categories Download of the day, GNU/Open source, Linux, Sys admin, UNIX, Windows, Windows server last updated November 24, 2007

Mihai Criveti has published a list for digital forensics work. This page is worth bookmark:

Computer Forensics is a science and an art. And to perform it, you need tools to identify, acquisition, preserve and analyze data in a clean, safe, non-destructive manner. Lots of tools. Everything from data acquisition to virtualization and steganalysis.

A list of more or less free tools (mostly open source or freeware, but I have included some relevant commercial products) no digital forensics expert should be without

=> Digital Forensic Tools: Imaging, Virtualization, Cryptanalysis, Steganalysis, Data Recovery, Reverse Engineering

How to: Upgrade Red Hat Enterprise Linux (RHEL) to latest Releases 5.1

Posted on in Categories CentOS, Howto, Linux distribution, Linux Virtualization, RedHat/Fedora Linux, Sys admin, Tips last updated November 8, 2007

RHEL 5.1 has been released. Redhat announced the availability of Red Hat Enterprise Linux 5.1, with integrated virtualization. This release provides the most compelling platform for customers and software developers ever, with its industry-leading virtualization capabilities complementing Red Hat’s newly announced Linux Automation strategy. It offers the industry’s broadest deployment ecosystem, covering standalone systems, virtualized systems, appliances and web-scale “cloud” computing environments.

Besides supporting Linux virtual machines, RHEL 5.1 will also support Windows XP, Windows 2000, Windows Server 2003 and the forthcoming Windows 2008, Crenshaw said. RHEL 5.1 uses Xen for its virtualization.

How do I upgrade to RHEL 5.1?

Login as the root user and simply type the command to fetch all updates via RHN:
# yum update
Depend upon your network condition and software configuration it may take anywhere between 5-20 minutes. Once completed, just reboot the server:
# reboot
Verify that everything is working fine:
# netstat -tulpn
# netstat -nat
# tail -f /var/log/messages
# egrep -i 'error|warn' /var/log/messages
# egrep -i 'error|warn' /path/to/apps/log

Community driven enterprise CentOS Linux users should expect update soon too. You can apply above commends to upgrade your CentOS box.