Linked by Thom Holwerda on Fri 18th Sep 2009 13:40 UTC, submitted by Robert Escue
Hardware, Embedded Systems This is an article which discusses the increase in storage capacity while performance and hard error rates have not improved significantly in years, and what this means for protecting data in large storage systems. "The concept of parity-based RAID (levels 3, 5 and 6) is now pretty old in technological terms, and the technology's limitations will become pretty clear in the not-too-distant future " and are probably obvious to some users already. In my opinion, RAID-6 is a reliability Band Aid for RAID-5, and going from one parity drive to two is simply delaying the inevitable."
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Robert Escue
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Our problem is the Government wants to build a SAN, but they want to use existing components that are in production (a bad idea) and I really don't think it sank in that mixing components is a good idea (we have 1 GB, 2 GB and 4 GB FC arrays and libraries). Our stuff is direct attach at the moment, which works but is not flexible.

Unfortunately this is what happens when you build something piecemeal and buy the key pieces (the FC switches) last.

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