Re: Is Mirroring w/RAID 5 overkill?

Posted in 1997

Chao Y. Din — Mon, 25 Aug 1997 01:04:00 -0400 — source: Informix-list mailing list archive (1991-1998)

Dave Otto wrote: > > Yes mirroring w/RAID5 would be overkill. In general, for > critical systems, I prefer to use RAID-1 (h/w mirroring) as > my fault-tolerant solution. It is usually fater then Informix > mirroring and allows greater flexibility WRT disk layout. Some > of the newer disk sub-systems are fast enough now, however, that > table fragmentation is not really necessary for OLTP. Also, > EMC2 uses disk caching routines that actually run best if you > (intelligently) interleave your data. > > -d Are we talking about different EMC2? The recommendation from EMC2 for our 2-terabyte disk array is to use Informix table fragmentaion! Chao Y. Din