Paul,

I operate on the premise that it's too risky to backup a running
application, as a rule, so I do these things: 
 
1. within the application's startup (in the loader phase) an option to
take a backup. Backup uses WinZIP (optionally) or VFPCompression. Then,
depending on the backup's size, it can be send out as an email
attachment, otherwise FTP, to get it off-site directly.

2. for 24x7 operations, use audit trials to log changes to a different
drive/machine for use in recovering specific tables from last available
backup.

3. In either case, the customer is obliged to periodically quiesce the
system to create full volume backups for all drives. 

I'm sure RAID 5 can be particularly helpful in all installations, but
there is no getting around the need for complete/offsite backups. 


Bill


> Hi all
> 
> Having searched through the archives I have identified the 
> following as 
> possible tools (all of which are free or very cheap):
> 
> BigSpeed ZIP DLL
> EclipseUI
> XStandard ZIP component (XZip)
> VFPCompression (Craig Boyd)
> 
> I'm working on a project based on Visual Promatrix and I have 
> run into 
> problems trying to backup application and system data and 
> what it boils 
> down to is the fact that (e.g. using VFPCompression), open tables and 
> databases cannot be backed up.  And trying to close them before doing 
> the backup and then re-opening them after the backup is a complete 
> nightmare scenario ...
> 
> So I need a tool (preferably free or cheap) that can backup 
> open files - 
> does anybody know if any of the above can do this (apart from 
> VFPCompression, which I have already tested) ?
> 
> Or another tool that can ?  I've seen it mentioned elsewhere that 
> DynaZip can do this - but I cannot get a definitive answer on 
> this.  Can 
> anybody confirm ?
> 
> Thanks
> 
> Paul Newton



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