Multipath I/O is a fault-tolerance and performance enhancement technique whereby there is more than one physical path between the CPU in a computer system and its mass storage devices through the buses, controllers, switches, and bridge devices connecting them. A simple example would be a SCSI disk connected to two SCSI controllers on the same [...]
IOzone is a filesystem benchmark tool. The benchmark generates and measures a variety of file operations. Iozone has been ported to many systems and runs under many operating systems including Windows, UNIX, Linux and BSD. This article gives you a jumpstart on performing benchmark on filesystem using iozone a free Filesystem Benchmark utility under Linux.
udev allows Linux users to have a dynamic /dev directory and it provides the ability to have persistent device names. In this tip you will learn about creating the static SCSI device name for /block/sdd as /dev/scsiharddisk.
Linux captures the ‘green’ flag, beats Windows 2008 power-saving measures Independent tests show that Red Hat Linux pulls as much as 12% less power than Windows 2008 on identical hardware.
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