|
DragonFly BSD is a fork of FreeBSD 4.8 (June of 2003, by Matthew Dillon). It is based on the same class of operating system as BSD and Linux, but it takes a different direction from the FreeBSD, NetBSD and OpenBSD series. The DragonFly project focuses on rewriting most of the major kernel subsystems with a great deal of work in nearly every subsystem, particularly the filsystem APIs
and kernel core. The DragonFly project provides native clustering support in the kernel. In 2007, a new filesystem called HAMMER was developed for DragonFly. This filesystem has been designed to solve numerous issues and to add many new capabilities to DragonFly, such as fine-grained snapshots, instant crash recovery, and near real-time mirroring. The filesystem is also intended to serve as a basis for the clustering work that makes up the second phase of the project.
|
 DragonFly BSD
The new 2.2 release includes Hammer, a filesystem that includes instant crash recovery, multi-volume file systems, data integrity checking, fine grained history retention, and the capability to mirror data to other volumes.
Dragonfly BSD and the Hammer Filesystem
Hammer is a fine-grained snapshot filesystem designed for large disks/media. Its sweet spot begins at 500GB, and it can handle up to 1 Exabyte of data. Hammer runs a snapshot every time the system syncs its mounts, in effect every 30-60 seconds. This history is retained and can easily be sifted through.
Linux Today
Daily updated Linux news on developers, performance issues, infrastructure, IT
Management and more.
Webopedia's "Did You Know...?" Section
Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software.
|
|
