I don't see what this issue is. There are many robust backup programs that can be used in various O/S environments. You should only backup the system when there is no activity on the system. Otherwise you will not get a clean backup.
[EMAIL PROTECTED] wrote: Seems like there should be a market for a product that can do online backups of unidata like uvbackup does for universe or the FILE-SAVE does for pick. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Robert DunnMiller > Sent: Wednesday, May 17, 2006 1:06 PM > To: u2-users@listserver.u2ug.org > Cc: [EMAIL PROTECTED] > Subject: RE: [U2] Backup Question > > > There is not a UniData backup utility like UniVerse does. > Every site that I have been involved with uses o/s level backups. > > There is a need to quiesce the database before breaking the > mirror for backups. dbpause will force all writes to disk and > will inhibit writes to the datafiles in the database, with a > few exceptions (writes to the _HOLD_, > _PH_) and will not interrupt report printing. Once the > dbpause is executed, the mirror is broken, and the database > is resumed with dbresume. This can be scripted so as to > minimize the actual down time. For a very large installation > (>1800 users, very active system) this time is in the > neighborhood of 1-4 minutes, depending on disk activity, and > how much data needs to be flushed to disk. > > Please contact me off line if you would like to discuss further. > > Regards, > > Robert > > --- > > Regards, > > Robert > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Wednesday, May 17, 2006 10:42 > To: u2-users@listserver.u2ug.org > Subject: RE: [U2] Backup Question > > Does unidata have a backup utility at all, or are all backups > done at the os level? Unidata DOES have journaling. I don't > know how much overhead that adds to the system, but it could > be worth looking into. If you go the mirroring route, you > would still have to stop the database before breaking the > mirror to ensure the integrity of what you are backing up on > the mirror, so it seems there would still be down-time required. > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > [EMAIL PROTECTED] > > Sent: Wednesday, May 17, 2006 9:53 AM > > To: u2-users@listserver.u2ug.org > > Subject: Re: [U2] Backup Question > > > > > > [EMAIL PROTECTED] wrote: > > > Hello all, > > > > > > > > > > > > I have a client that only does backup once a week. I feel > > this is a > > > dangerous situation and would like to suggest they look for an > > > alternative. I believe that they could mirror the live > system, stop > > > the mirror, backup this copy and then restart and resync > the mirror. > > > > The problem with this approach is that UV does not update the > > headers that much. Dunno about UD. So if they ever DID need > > to recover, you might find yourself in a world of hurt with > > uvfixfile over this ... > > > > > What I don't know, and > > > would like a little more information on before I approach > them with > > > the idea, is now these steps are done. Or, if anyone has a better > > > solution to a shop that has to be up 24/7 I am willing to > listen, I > > > just hope they are. > > > > > The safest UV backup is always one that uses the native UV > > facilities... there's something called UVBackup :-) > > > > > > They are running SunOS 5.8. They have just hired a new Unix > > > Administrator, right out of college, and I don't know if he is > > > understands the problem. That is why I would like to > > suggest the steps > > > that he looks into, just to get the ball rolling. > > > > > Doesn't understand the importance of backing up, or doesn't > > understand the importance / problems of backing up U2? > > > > What you probably want to do is use uvbackup to automatically > > dump the database every time the system is likely to be quiet > > - you can run that while people are logged on - it's not a > > problem. That simply dumps all the accounts into a text dump > > file that you can back up onto tape or whatever later. And > > there are no file integrity problems. > > > > If you go down the mirror route (and yes, that is a good > > idea, but there's no need to do it that often if you're > > uvbackup'ing), then I think there's a dbpause command that > > will sync files and stop any disk i/o. Pause the db (doesn't > > stop users using it), break the mirror, resume the db, backup > > the mirror, resume the mirror. > > > > If you've got both types of backup you should be reasonably secure. > > > > If he doesn't understand the importance of using UV-aware > > backup tools, just ask him if he has any experience of > > backing up Windows - and how often do his backups there screw > > up because Windows has a file open? Although Unix will quite > > happily let him back up an open UV file, because it's open > > it's internally inconsistent on disk, and a disk backup tool > > won't get a clean backup! > > > > Cheers, > > Wol > > ------- > > u2-users mailing list > > u2-users@listserver.u2ug.org > > To unsubscribe please visit http://listserver.u2ug.org/ > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.1.392 / Virus Database: 268.6.0/341 - Release > > Date: 5/16/2006 > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.392 / Virus Database: 268.6.0/341 - Release > Date: 5/16/2006 > ------- > u2-users mailing list > u2-users@listserver.u2ug.org > To unsubscribe please visit http://listserver.u2ug.org/ > ------- > u2-users mailing list > u2-users@listserver.u2ug.org > To unsubscribe please visit http://listserver.u2ug.org/ > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.392 / Virus Database: 268.6.0/341 - Release > Date: 5/16/2006 > > -- No virus found in this outgoing message. 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