Hi, Jim, All!

> >Jim,
> >
> >
> >
> >>And, no, NBak doesn't address incremental backup. As far as I know
> >>(which may be wrong), it doesn't address this problem at all.
> >>
> >>
> >
> >It addresses it completely!
> >
> >It supports the standard/simple/single incremental model
> (ala standard
> >tape backup solutions).
> >
> >It also supports a multi-level model (ie. hourly, daily, weekly...).
> >You can set backup points and then request a backup which
> reflects that
> >changes from those points.
> >
> >
> >
> Sounds great. Can you give us a pointer to the documentation?

In devel list Helen pointed to a nice page giving explanation of
NBAK/NBACKUP inner workings.
If you need to know details of implementation feel free to read the
explanation (carefully), source and ask questions.

Unfortulately, user-level documentation does not exist yet, but it will
be there before 2.0 is released.
Anyways, nbackup usage page should provide enough info for experienced
user:
-----------
C:\fb2\bin>nbackup.exe
Physical Backup Manager Copyright (C) 2003 Firebird development team
Original idea is of Sean Leyne <sean@...>
Designed and implemented by Nickolay Samofatov <skidder@...>
This work was funded through a grant from BroadView Software, Inc.

Usage: nbackup <options>
valid options are:
-L <database> Lock database for filesystem
copy
-U <database> Unlock previously locked
database
-F <database> Fixup database after filesystem
copy
-B <level> <database> [<filename>] Create incremental backup
-R <database> [<file0> [<file1>...]] Restore incremental backup
Notes:
<database> may specify database alias
incremental backups of multi-file databases are not supported yet
"stdout" may be used as a value of <filename> for -B option
-----------

> Jim Starkey

Nickolay