Re: HELP - Hardware mirroring versus dbms mirroring

Posted in 1994

"Andy Kent" — Thu, 18 Aug 1994 19:05:29 GMT — source: Informix-list mailing list archive (1991-1998)

> Question 1: For the disk array system I already have, is there a way to manage > the 4 disks, i.e. place dbspaces on each? Yeah - rip out the RAID architecture. Seriously though, you have just hit on the very reason why RAID architectures are (more often than not) bad news for OnLine - OnLine likes to see as many separate raw disks as possible, whereas RAID precludes this. If you are really unlucky you might get mass physical fragmentation too. I've posted this conf several times asking if anyone can come up with some sound reasons why RAID could ever be a *good* idea for OnLine, and to date there have been The Big Zip responses. Why do HP salesmen keep plugging those things? akent@cix.compulink.co.uk (Andy Kent) ------------------------------------- +44 117 974 2815