guy keren wrote:
On Thu, 4 Aug 2005, Michael Ben-Nes wrote:
Hi Everyone
I want to backup a file constantly as it change.
Is it possible at all ?
please define what "backup a file constantly" means for you.
Yep, having an exact _current_ copy all the time on two storage system.
Its the WAL ( Write ahead log ) of the postgresql DB.
Its updated on any DB action.
So i assume it will be quite Long and will change every sec or less.
I would like to keep the backup on a another computer. NFS and such.
does it mean: having an exact _current_ copy all the time on two storage
systems (i.e. safety against "disaster")
does it mean: keep a historic change log of the file for every change
made, with the ability to rollback to any desired state?
does it mean: keep a backup of the file every 10 minutes?
does it mean something else?
then define: the size of the file (min/average/max)
the rate of changes per time unit (min/average)
who generates the file and changes to the file - a given
software you wrote, a given software you did not write?
are the changes to the file performed manually, or by
automatic software?
then come back.
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Ben-Nes Michael - Manager
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Fax: 972-4-6990098
http://www.canaan.net.il
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