RE: Restoring a level-1 backup at a later date?

Malc I can see no problem with this provided you are using IDS9.3 on the new machine and there is full binary compatibility. Certainly from an ontape point of view this is a viable option (not used onbar myself), just don't respond to the option to restore a level 1 archive on top of the level 0 until you have it in the drive whether this is 2 days, 2 weeks or 2 years later. You could reduce your down time even further by taking the logical logs from the first machine and applying them to the second. You need only kick the users off for the length of time it takes to apply the final log. Could be minutes few if you manually force a new log just as you want to make the switch and you have ensured all previous logs have been applied. A test would be useful if only to ensure the exact process is correctly documented in the event of personal catastrophe involving a bus and less than perfect underwear !! :-) Keith -> -----Original Message----- -> From: malc_p@btinternet.com [mailto:malc_p@btinternet.com] -> Sent: Thursday, February 03, 2005 10:15 AM -> To: informix-list@iiug.org -> Subject: Restoring a level-1 backup at a later date? -> -> -> Here's a good one. -> (IDS9.30, HP-UX 11i) -> We're moving to a different facility and new hardware (same basic -> machine & OS) at the end of the month and in order to -> minimise the time -> taken to transfer our 180Gb instance and allow the users unfettered -> access up to the very last minute (god we're so good to -> them) we'd like -> to do the following using OnBar: -> 1) Run a level-0 backup on the Thursday night from the old production -> server (currently this takes about 7 hours). -> 2) Restore this to the new server at the new facility (L0 -> restore time -> at present is about 12 hours end-to-end). -> 3) Leave the new server in limbo while the users have -> continued access -> to the old box. -> 4) Friday night kick the users and then take a level-1 of the old -> production box - we've tested this and it takes about 2.5 hours. -> 5) Take this level 1 and restore it to the new box (which should take -> about 3 hours) and let the users onto the new box. Thus the users -> should lose only 3 hours instead of 12. -> -> Can we do this? From the OnBar guide it looks like we can't but our -> scenario isn't covered. -> Sorry, we haven't had time to do a test run so we're after -> list wisdom -> (anyone called Obnoxio please pipe down!) -> Malc -> (Copying to ids@iiug.org) -> ********************************************************************************** This message is sent in strict confidence for the addressee only. It may contain legally privileged information. The contents are not to be disclosed to anyone other than the addressee. Unauthorised recipients are requested to preserve this confidentiality and to advise the sender immediately of any error in transmission. This footnote also confirms that this email message has been swept for the presence of computer viruses, however we cannot guarantee that this message is free from such problems. ********************************************************************************** sending to informix-list