We have an environment that is HA/DR. All the ARS boxes are members of the server group and at least one is located elsewhere, they all have different hostnames / IPs. If our primary datacenter is rendered unavailable for some reason the AR Server and MidTier are already running in our backup datacenter.
Our DBAs replicate our SQL Server DB to a separate cluster in our backup datacenter. I believe they use VVR for this. My understanding is that once failed over, the DB would have the same instance name, but the box it is running on would not have the same hostname / IP. From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Pat Zandi Sent: Wednesday, April 14, 2010 6:48 AM To: [email protected] Subject: Re: DR Recovery ** Not to be picky, this is more ha than dr. Unless the other box in the group is in Dallas which is not recommended. Just create a second box put oracle on it as well turn on and test.. Shutdown ars side dataguard oracle ship box to Dallas and have ready for standby... That is dr.. Ha is two ars boxes running at same time with maybe a load balencer in front Sent from my iPhone On Apr 13, 2010, at 4:26 PM, Lyle Taylor <[email protected]<mailto:[email protected]>> wrote: Well, I guess it depends on what you’re trying to accomplish. I’m not sure if I see a benefit in doing that over having a server group, though… Lyle From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Kathy Morris Sent: Tuesday, April 13, 2010 2:22 PM To: [email protected]<mailto:[email protected]> Subject: Re: DR Recovery ** BMC told me there is a way to do mirroring with the same IP address, and the same Host name. They said it is best that I do not change the Host name and IP so then config files do not need to be modified. In a message dated 4/13/2010 3:30:35 P.M. Eastern Daylight Time, [email protected]<mailto:[email protected]> writes: ** 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:[email protected]] On Behalf Of Kathy Morris Sent: Tuesday, April 13, 2010 12:51 PM To: [email protected]<mailto:[email protected]> 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<http://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. _attend WWRUG10 www.wwrug.com<http://www.wwrug.com> ARSlist: "Where the Answers Are"_ _attend WWRUG10 www.wwrug.com<http://www.wwrug.com> ARSlist: "Where the Answers Are"_ _attend WWRUG10 www.wwrug.com ARSlist: "Where the Answers Are"_
