Re: Fault tolerant Informix-Online based Unix systems?

Spetc@aol.com wrote: > > We now have a 24 hour, high user system. We are about to upgrade to 7.1. We > use use the latest SCO Unix (can't remember the number!). > > My question is this : > > We want to try and eliminate downtime. Is there a hardware / software > confuguration which would provide this? > > In other words if a disk drive, ram chip, disk controller, etc. goes down on > master system A, another system (system B?) invisibly kicks in, seamlessly to > the users, and informs the operator of the hardware error. > > I'm guessing this would have to at least involve disk mirroring and I'm told > it's better to use "hardware mirroring", as opposed to 7.1 mirroring? > > I'm guessing it could never be perfect. For example if we got a long > transaction error on system A then, by virtue of the wonderful mirroring, we > would also have it on system B! > > Any comments, as ever, gratefully received. :) I use Online 7.11UC1 and the only problem I really have is making sure our in-house apps are updated on both machines. But if you want more than DR I saw this e-mail in another news group (I hope it helps): In article: <4h2jem$356@newsbf02.news.aol.com> spetc@aol.com (Spetc) writes: > Is it possible to get SCO Unix hardware which is fault tolerant? > > For example, two linked boxes A & B, where if a piece of hardware goes > down on the main system A, such as a disk controller, ram chip, hard disk > then system B will invisibly kick in and the operator is made available > of the hardware crash? > OF COURSE!! - Sentinel from Star technologies does just that using no special hardware whatsoever We deal with Europe. Please contact the US (Head) office for Americas & rest of world: LEIGH HUGHES (Sales Director) STAR TECHNOLOGIES INC 23162 LA CADENA LAGUNA HILLS CA 92653 Tel: 714 768 6460 Fax: 714 859 8736 Email: leigh@startech.com ENQUIRIES WELCOME!! > -- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Peter Ranoe * STAR TECHNOLOGIES (UK) LTD * * * Passfield Enterprise Centre * * Email: pgr@startech.demon.co.uk * Lynchborough Road * * Voice: +44 1428 751091 * LIPHOOK * * Fax: +44 1428 751117 * Hants GU30 7SB UK * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * SENTINEL - Fault Tolerance for SCO Servers * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *