Tom Lane writes: > Is there any rhyme or reason to the various "RAID n" designations? > Or were they just invented on the spur of the moment?
The paper that introduced the term RAID used a numerical classification for the various schemes. (So I guess the answer is yes.) The traditional levels are: 0 Nonredundant 1 Mirrored 2 Memory-style ECC 3 Bit-interleaved parity 4 Block-interleaved parity 5 Block-interleaved distributed parity [Hennessy & Patterson] There are also other levels. One poster talked about RAID 10 which appears to be a mirrored RAID 5. -- Peter Eisentraut [EMAIL PROTECTED] ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
