journaling file system


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journaling file system

A file system that contains its own recovery capability in the event of a failure. Before the disk indexes are updated, the information about the changes is recorded in a separate log (the journal). If a power or other system failure corrupts the indexes as they are being rewritten, the operating system can use the log to repair them when the computer is restarted.
References in periodicals archive ?
The server also has an embedded journaling file system for simpler administration--an important consideration, since studies have shown that while every megabyte of storage added to a server costs less than 60 cents to purchase, it incurs an additional $3.5 per year in labor and lost productivity to manage.
As far as SCO is concerned, this means technologies such as the AIX Journaling File System, the AIX Enterprise Volume Management System, and the Dynix Remove Copy Update should be treated as part of the original Unix System V code, and therefore should not have been donated to Linux.
"Quick Restore complements 9205 NAS features designed for maximum reliability and minimal downtime, such as the ext3 journaling file system, RAID 5, and easy installation and management."
This is not to say that the company doesn't offer prod-ucts in other areas; indeed, through much of the '90s, some observers might say that the company almost lost sight of its strengths, allowing itself to be drawn into the general-purpose Unix server wars--where it has been thoroughly trounced by Sun and HP and then into the world of Windows servers--the very definition of a me-too, commodity market and, now, SGI is an enthusiastic player in the open-source Unix world, as well, and has made valuable contributions to Linux, includeing the company's XFS journaling file system, which addressed a serious weakness in Linux.