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standby/hot standby? [message #286631] Sun, 09 December 2007 03:16 Go to next message
nadia74
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Hi,
Is there any difference between standby and hot standby??
Regards
Re: standby/hot standby? [message #286633 is a reply to message #286631] Sun, 09 December 2007 03:26 Go to previous messageGo to next message
Michel Cadot
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Maybe if you tell us where you got these expressions we can answer you.
Maybe a standby that is not "hot" is a shut down standby but is this still a standby?

Regards
Michel
Re: standby/hot standby? [message #286635 is a reply to message #286631] Sun, 09 December 2007 03:36 Go to previous messageGo to next message
nadia74
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I've read it in artical about database oracle for Chris Lawson in site www.dbspecialists.com
Regards
Re: standby/hot standby? [message #286636 is a reply to message #286635] Sun, 09 December 2007 03:50 Go to previous messageGo to next message
Michel Cadot
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Do you have a precise url?
Maybe you should ask the author.

Regards
Michel
Re: standby/hot standby? [message #286640 is a reply to message #286631] Sun, 09 December 2007 04:11 Go to previous messageGo to next message
Michel Cadot
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Here's what I found in http://www.webopedia.com
Quote:

hot standby: A method of redundancy in which the primary and secondary (i.e., backup) systems run simultaneously. The data is mirrored to the secondary server in real time so that both systems contain identical information.

Quote:

warm standby: A method of redundancy in which the secondary (i.e., backup) system runs in the background of the primary system. Data is mirrored to the secondary server at regular intervals, which means that there are times when both servers do not contain the exact same data.

Quote:

cold standby: A method of redundancy in which the secondary (i.e., backup) system is only called upon when the primary system fails. The system on cold standby receives scheduled data backups, but less frequently than a warm standby. Cold standby systems are used for non-critical applications or in cases where data is changed infrequently.


Regards
Michel

[Updated on: Sun, 09 December 2007 04:11]

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Re: standby/hot standby? [message #286645 is a reply to message #286631] Sun, 09 December 2007 04:40 Go to previous messageGo to next message
nadia74
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Thanks for your help
Re: standby/hot standby? [message #286646 is a reply to message #286645] Sun, 09 December 2007 04:49 Go to previous message
Michel Cadot
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Thanks to you to let me learn new expressions.

Regards
Michel
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