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24%
Dispatches from the world of IT
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
cost to build a chiller plant as part of the data center can be eliminated altogether. This can result in more that $100K of operational savings per megawatt (MW) of IT and eliminate capital expenditures
24%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
/sda 20 Account information: 21 ACL information: 22 ALL Network Bonding To prevent the network cards and thus the connection to the cluster and storage network from becoming a single
24%
Managing virtual machines
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Igor Klimov, 123RF.com
CentOS 5 to 6 would work – a procedure the release notes advise against – a virtual environment seemed like the prudent decision. The first step is to create a copy of the current system, which should
23%
Enterprise software management with Red Hat Satellite Server
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© robbiverte, 123RF.com
installation script installs an Apache 2.2 web server. Figure 6 shows the Overview page, which provides a single view of tasks and critical systems. To view the Systems page, where the Satellite administrator
23%
Realistic Ceph Performance Tuning Measures
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Photo by Brenton Pearce on Unsplash
in this case by carrying out sequential writes with default settings. The block size is then 4MB and the queue depth 16 (Figure 1). Figure 1: False positives
23%
OpenVPN with e-tokens in large-scale environments
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© sTan, fotolia.com
with its e-tokens – one reason they were acquired by SafeNet. However, e-token is e-token, whether labeled Aladdin or SafeNet. At a price of around US$ 100, an e-token is basically a USB device containing
23%
Julia: A new language for technical computing
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
.33 164.69 0.75 rand_mat_stat 3.37 39.34 11.64 54.54 22.07 8.12 rand_mat_mul 1.00 1.18 0.70 1.65 8
23%
New Approaches to DNS
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Lead Image ©bowie15, 123RF.com
:26:27 UTC ;; From 149.112.112.112@853(QUIC) in 9.6 ms DNS over HTTP/3 The relatively new DNS over HTTP/3 (DoH3) protocol feels like yet another upgrade of DoH. This time it's not a clone as a cool new
23%
Moving HPC to the cloud
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Zarko Cvijovic, 123RF.com
In the coming years, the cloud computing market is easily expected to exceed US$ 100 billion. Many organizations have found using the cloud has a clear advantage over in-house hardware. Indeed

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