The Real (and Virtual) Adventures of Nathan the IT Guy

Dec 3 2008   11:00PM GMT

Symantec Backup Exec – Backup to Disk Issue

Nathan Simon Nathan Simon Profile: Nathan Simon

By default a backup to disk folder is setup to have a maximum size for backup-to-disk files of 1GB and a maximum of 100 of these. Well what happens if you have a backup of say 265 GB’s? It will eventually have written 100, 1GB files, thus provoking backup exec to ask for another drive(which may confuse many)

What you do is you double check you Backup-to-Disk Folder Settings under the devices tab.

You will notice the points below

– Maximum size for backup-to-disk files was set to 1GB

– Maximum number of backup sets per backup-to-disk file was 100

Change them to these settings

– set Max size to 100GB (if NTFS; if Fat32 max size will only be 4GB; at which point I would set the max number of backup-to-disk files much higher)

– set Max number to 4

These settings will allow up to 400gb backups after compression, thats about 850gb of Data. Set the 2 above settings to whatever your system can handle, just make sure you account for enough space!

2  Comments on this Post

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  • Natshaw
    That's not what that setting does. It's maximum number of backup sets per file, not maximum number of files. Cheers.
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  • Brigus
    Yeah, what the last guy said: "backup sets per backup-to-disk file" is the option, and it is *not* equivalent to "max number of backup-to-disk files", for which BE has no setting of which I am aware (unfortunately). Setting your max B2D file size to something huge like 100GB is generally a bad idea in terms of performance, although there might be a situation where it's appropriate.
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