Is Mirroring w/RAID 5 overkill?

Posted in 1997

Steven L Cooper — 19 Aug 1997 14:20:42 GMT — source: Informix-list mailing list archive (1991-1998)

Howdy, Just wondering what ya'll think? I have a DG AV/3600 with 24GB of RAID 5 (across 6 drives) running SCO OpenServer 5.0.04 and OWS 7.2.xx. So far, Informix has run happily with and without mirroring. (I learned the evils of filling the rootdb, but that is another story...) Does Informix do anything "special" with a mirror that my RAID 5 controller is not already doing? If the RAID controller goes down, a mirror is not going to do me any good anyway! But, if one or two of the hard drives go down, Informix would not even "know" about it. From what I have read, Informix will failover to the mirrored location if a problem is detected in the main location, but is that problem normally hardware related? Thanks for any comments, Steve -- Ignorance can be cured! scooper@thecompounders.com