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PROUHD: RAID for the end-user

Apr 15, 2010, 08:04 (1 Talkback[s])
(Other stories by Pierre Vignéras)

[ Thanks to linuxconfig for this link. ]

"Abstract: RAID has still not been adopted by most end-users despite its inherent quality such as performance and reliability. Reasons such as complexity of RAID technology (levels, hard/soft), set-up, or support may be given. We believe the main reason is that most end-users own a vast amount of heterogeneous storage devices (USB stick, IDE/SATA/SCSI internal/external hard drives, SD/XD Card, SSD, ...), and that RAID-based systems are mostly designed for homogenous (in size and technology) hard disks. Therefore, there is currently no storage solution that manages heterogeneous storage devices efficiently.

"In this article, we propose such a solution and we call it PROUHD (Pool of RAID Over User Heterogeneous Devices). This solution supports heterogeneous (in size and technology) storage devices, maximizes the available storage space consumption, is tolerant to device failure up to a customizable degree, still makes automatic addition, removal and replacement of storage devices possible and remains performant in the face of average end-user workflow.

"Although this article makes some references to Linux, the algorithms described are independent of the operating system and thus may be implemented on any of them."

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