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26%
Network backup with Burp, Obnam, and Backshift
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Sergey Peterman, 123RF.com
that Backshift is not just another tar front end, because the deduplication algorithm leads to much greater space savings than mere compression. The relatively fresh Backshift version 1.03 [6] is available
26%
Virtualization with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
is qemu-kvm-extras. openSUSE 11.3 even bundles the complete, official Qemu system into its qemu package, which leads to curious situation where you can launch Qemu by typing either qemu-kvm or qemu
26%
Strategies for routing voice calls around a firewall
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
gnohz, 123RF.com
. This solution works fairly reliably, although problems can occur with multiple-level NAT. The WLAN router translates the addresses in communications with the ADSL modem, which also uses NAT. This often leads
26%
Service management by the book
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Michael Flippo, Fotolia.com
information that could lead to changes and improvements to your overall service strategy (thus completing the cycle). All That Glitters Is Not Gold Although ITSM is a lot more than what I have discussed here
26%
Demystified: The facts about green IT
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Iakov Kalinin, 123RF
words, both variants – purchasing and upgrading – should alternate to achieve an ecological optimum. Other considerations lead to the conclusion that upgrading after three years is not the most ecological
26%
Business continuity for small to medium-sized enterprises
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Andrea, Fotolia.com
and the applications thus are the blood in the veins of the company's IT infrastructure. A server failure will inevitably lead to loss of productivity. Depending on the industry, the consequences of a server failure can
26%
Enterprise software management with Red Hat Satellite Server
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© robbiverte, 123RF.com
updates, the time involved in the process and the possibility of a critical patch slipping through the cracks lead to the need for a tool that tabulates, manages, schedules, and implements patches. Red Hat
26%
The Ruby Version Manager (RVM) hands-on
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
©Mettusr, 123RF.com
and will always load the latest version of a Gem, instead of a specific version, and this can lead to compatibility issues. A useful approach in this case is to maintain Gems in a project-specific way instead
26%
Neglected IPv6 features endanger the LAN
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Stanislaw Tokarski, 123RF.com
document [5] mandatorily calls for RA filter mechanisms on Layer 2 switches. Initial experience shows that even leading manufacturers are unfortunately only implementing this feature in the latest hardware
26%
Check your VoIP networks with SIPVicious and sngrep
30.11.2025
Home »  Archive  »  2025  »  Issue 90 VoIP N...  » 
Photo by Quino Al on Unsplash
. Jitter occurs when packet transit times vary (e.g., because of network congestion, different routes, or hardware delays). These fluctuations lead to audible disturbances such as dropouts or distorted audio

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