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25%
Tuning SSD RAID for optimal performance
09.08.2015
Home »  Archive  »  2015  »  Issue 28: SSD RAID  » 
Lead Image © ELEN, Fotolia.com
with four SSDs, the write IOPS decreased with writeback activated from 14,400 to 3,000 – nearly 80 percent fewer IOPS. The only advantage of the write cache is low write latencies for RAID 5 sets. Because
25%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
/s, 84.4 KiB/s (691.8 kbit/s) 2 KiB blocks: 81.3 IO/s, 162.6 KiB/s ( 1.3 Mbit/s) 4 KiB blocks: 80.2 IO/s, 320.8 KiB/s ( 2.6 Mbit/s) 8 KiB blocks: 79.8 IO/s, 638.4 KiB/s ( 5.2 Mbit/s) 16
25%
HTML to database with a Perl script
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
Lead Image © Danila Krylov, 123RF.com
="left" valign="top"> 16 17 18 19 Once the list of commands is loaded, the target attribute is again used
25%
Server distributions for small businesses tested
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © wabeno, 123RF.com
. The feature scope of Samba 3.x is normally absolutely fine to integrate Windows clients with an intranet that uses Linux servers, and because smaller IT environments typically only use the Samba server
25%
Managing virtual machines
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Igor Klimov, 123RF.com
to give you consistent results with a running system. A cleaner approach would be to use an image backup program for Linux, such as Clonezilla [2] or Partimage [3], which means shutting down the system
25%
Rethinking RAID (on Linux)
16.03.2021
Home »  HPC  »  Articles  » 
=libaio, iodepth=32 fio-3.12 Starting 1 process Jobs: 1 (f=1): [w(1)][100.0%][w=1420KiB/s][w=355 IOPS][eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=3377: Sat Jan  9 15:31:04 2021   write: IOPS=352, BW=1410Ki
25%
Getting a free TLS certificate from Let's Encrypt
13.06.2016
Home »  Archive  »  2016  »  Issue 33: IPv6...  » 
Lead Image © Stuart Miles, 123RF.com
echo " certificates exist, but apparently are very fresh, do not get new ones" 50 sleep 3 51 # notify and exit this loop iteration, continuing with the next 52
25%
How to configure and use jailed processes in FreeBSD
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Corina Rosu, 123RF.com
). Figure 4: On the right, you can see the X11 application launched in the a jail (xclock) on a Gnome 3 desktop. The left-hand window shows the associated SSH terminal. Building on this setup, you can
25%
SmartOS as a virtualization platform
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © Paulus NR, 123RF.com
: cd / curl -k http://pkgsrc.joyent.com/packages/SmartOS/bootstrap/bootstrap-2013Q3-x86_64.tar.gz | gzcat | tar-xf - To rebuild the package database and update it, enter: pkg_admin rebuild pkgin -y up
25%
pfSense firewall and router distribution
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Sergey Mironov, 123RF.com
. Because it had to run in RAM, extensions were difficult. This situation prompted the two to start working on their own distribution and spawned the development of pfSense [1]. The core of version 2.0 from

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