Re: HELP - Hardware mirroring versus dbms mirroring
Posted in 1994
} }From: ckipp@vth1.vth.colostate.edu (Cathy Kipp) } }Not to disagree with an expert, but I think it's important to mention here that } }while hardware mirroring may be faster with the OnLine engine, under the 6.0 } }DSA engine, Informix miroring will offer some performance advantages. } } I haven't been controversial for a while, so why not now... } } Jon Bentley (or someone like him) said somewhere words to the effect that } 'if you can simulate something in the language faster than the compiler } does the same operation, the compiler writer has blown it badly'. } } I think much the same applies to disk mirroring -- if the O/S can't do it } better than OnLine, then the O/S mirroring is probably defective. } } Yours, } Jonathan Leffler (johnl@informix.com) #include <disclaimer.h> Yes, but I think Cathy is refering to the fact/rumor that 6.0 will be able to READ from the mirror (i.e. poor mans striping), so that extra rotating heater you've got bolted into your computer is a little more functional than a fire extinguisher. Will (villy@collinscomp.com)