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How unix backup works?

Hi,

Can anybody please explain how unix file system backup works ?
We have vss in windows filesystem backup which is needed as there are many files being used at the time of backup, what is the similar technology in unix?

And for a unix incrimental backup, is netbackup using atime or mtime to backup changed files?
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Re: How unix backup works?

This question is covered quite extensively in the Admin Guide, have a look https://www.veritas.com/content/support/en_US/doc/18716246-126559472-0/v41780104-126559472

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Re: How unix backup works?

The architecture on Unix/Linux is different from Windows - there are no concept of locked file in Unix/Linux

Files in on *nix system may be busy - open by a application, but it can still be read if permission allow.