Earlier quoted context omitted.
> it isn't quite like one is the successor of the other. Given the current price of hard drives, I don't get how "twice the parity space" can even matter. Furthermore, modern RAID controllers perform almost exactly the same using RAID-5 or RAID-6 (verified on most 3Ware, LSI, Adaptec and Areca controllers). So yes, RAID-6 definitely is RAID-5 successor. > how to deal with that scenario. RAID is not an alternative to…
RAID-6 is in no universe a RAID-5 successor. Simplifications of enterprise needs and risk tolerances and compromise acceptance is sophistry. It is telling enough that despite the bluster of some on Hacker News, major storage vendors (ergo - people who know much more than you) still make RAID-5 the default. Maybe they just haven't read the news. Regarding the backup -- yeah, no kidding. That was the point. If the argu…
About RAID-5: some major storage vendors still use it for smaller arrays. Some other don't use it anymore (NetApp, DDN come to mind). The notion that RAID-5 isn't fit for arrays of large capacity drives doesn't come from me and is hardly new. You don't need any links as obviously you know all about this already.
I've set up my first terabyte SAN in the 90s back when it used to fill a whole rack, 9 GB micropolis drives where hot and SSA was the new interconnect, but I probably know less about storage than you.