On 2002-07-11 9:16 AM, "Paul Welty" <[EMAIL PROTECTED]> wrote:
> I have noticed several failures of backups of the Mail Database with > Retrospect 5 (workgroup). These failures always seem to happen when the file > changes between the time of the initial scan of files and the time of the > actual backup of the particular file (eg the database). > > I know this because Retrospect reports in the 'execution failures' log > something like "file cannot be backed up---modification date changed". > Presumably, this means it changed during the time mentioned above. I did a quick test. When I intentionally changed a file after the scan and before the backup, Retrospect did not complain at all. After the backup, during the "compare" phase, Retrospect also did not complain about the file I intentionally modified. I also reviewed Retrospect's "Operations Log" and found that virtually every night, Retrospect complains of a "different modification data/time" between the time the database was backed up, and the time it the second pass "compared" the backup against the source file. NOTE: This does not necessarily mean the file was improperly backed up!!! It simply means the file had changed in some way between the backup and the compare. In fact, I was able to restore from this file and had no problems using the resulting Entourage database. Retrospect has the ability to detect open or locked files, and report that error, although I have not seen it: http://www.dantz.com/index.php3?SCREEN=knowledgebase_article&id=65 During the compare phase, Retrospect also sometimes reports that a file has a different size. This happens to me with things like system.log, but I have never seen it with the Entourage database. One thing I like about Retrospect is that, while I can restore my drive to essentially its state as of the last backup, I can also choose to restore multiple copies of a given file (e.g. The Entourage database) that were saved at different times. That way, if I discover a problem with the "latest" copy of a file, I can drop back to the previous day's backup and try that version. By the way, I'm running Retrospect 5.0.205 (workgroup edition), and Entourage v.X Service Release 1 (10.1.0). For what it's worth, Retrospect is running on an OS 9 "server", and backing up (among other things) this OS X "client" which includes my Entourage database. Enjoy! -- Jim -- To unsubscribe: <mailto:[EMAIL PROTECTED]> archives: <http://www.mail-archive.com/entourage-talk%40lists.letterrip.com/> old-archive: <http://www.mail-archive.com/entourage-talk%40lists.boingo.com/>
