A server group behind a load balancer can help you accomplish this. If you want, direct all traffic to the primary server unless it's down, then the LB can direct traffic to the backup server. They can both be up at the same time, and the IP address doesn't need to be the same, and you don't need to replicate data. You would just have a DNS alias for the load balancer that would be exposed to clients - they wouldn't need to know the details about what's behind the LB.
That doesn't address database failure, but there are other options in that realm that are database specific. Lyle From: Action Request System discussion list(ARSList) [mailto:arsl...@arslist.org] On Behalf Of Kathy Morris Sent: Tuesday, April 13, 2010 12:51 PM To: arslist@ARSLIST.ORG Subject: DR Recovery ** Hi All, If you have a DR box that is mirrored after Production. Someone was telling me that there are DR tools that will allow you to have the same Hostname and IP address for Prod and the DR server, and allow synchronization between the two servers. During fail over it switches to the DR Box. My question is if DR server is up, it cannot have the same host name and IP address. If the DR is down, then the synchronization of data will not take place. Is there a way to have DR mirrored with the same IP and host name? _attend WWRUG10 www.wwrug.com ARSlist: "Where the Answers Are"_ NOTICE: This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug10 www.wwrug.com ARSlist: "Where the Answers Are"
