RE: High-Availability For Informix

>From: Don Ignacio <dignacio@techie.com> >> >>Here lies the problem, is there any software together with HDR switch the >>applications >>to the secondary server as well as switch the secondary server to standard >>mode once >>the primary server fails. Basically, achieve the shortest downtime, or non >>at all. > >Thre's something called Big-IP (or something like that) which might help. Sun offer a more performant version of this sort of software, but I can't rememebr what it's called Paul Watson # WF Software Ltd # You are only young once Tel: +44 1436 674729 # but you can be immature Fax: +44 1436 678693 # forever www.wfsoftware.com # The contents of this e-mail are confidential to the ordinary user(s) of the mail address(es) to which it was sent and may be legally privileged. If you are not the intended recipient, any disclosure, copying, distribution or use of it, or any part of it, in any form whatsoever, and any actions taken or omitted to be taken in reliance on it, is prohibited and may be unlawful.

Hi Don, Currently, we are using a product called HA+ by Fulltime Software (now owned by Legato). The servers need to have a dedicated fiber-optic connection to check for each others heartbeat. The failover is done in such a way that when there is a hardware or process failure (such as the Informix server), the other server takes over the failed server's hostname, ip-address and of course the disk array. (Yes, the disk array is connected to both servers) Then it starts all the processes that were previously running on the failed server. It isn't cheap though. See http://www.legato.com/Products/html/legato_ha.html Hope this helps, Zandy * Sent from RemarQ http://www.remarq.com The Internet's Discussion Network * The fastest and easiest way to search and participate in Usenet - Free!