Thanks for the reply. Yes we would be packing and backing up each day, so changes made to the db wouldn't be that much of an issue. I guess the best way to do this is to just test using various file types and record the changes to the ZODB.
On Dec 5, 2007 12:06 PM, Raphael Ritz <[EMAIL PROTECTED]> wrote: > > michael nt milne wrote: > > Hi > > > > Is there any documentation anywhere or advice on being able to estimate > > the size of a potential Zope ZODB instance based on the size of a > > current site? For example if you were to have a site of say 5 gb > > consisting of HTML pages, graphics, images, pdfs, word docs, excel files > > etc : are there any pointers anywhere on roughly how many gigs of ZODB > > this would take up? Obviously word, excel and other binary formats will > > likely translate to more weight... > > > > Also are there any ZODB growth prediction charts at all? > > > > There is no general answer to this question other than "it depends" ;-) > > In addition to the raw amount of data that you listed the most > important additional piece of information you didn't provide > is how busy people will be changing things. > > As any change or edit to an object causes this object to be written > to the ZODB again your ZODB can grow (almost) arbitrarily fast until > you pack it again. As packing removes the history (up to a point) it > is again a policy decision on your side how much history you want > or need to keep. > > With regard to the overhead added by having a file live in the ZODB > versus being on the file system I think you shouldn't even worry. > For a first estimate this difference shouldn't matter. > There are exceptions, of course, like when you add Archetypes to > the picture as AT tends to add a lot of overhead but that's not > really a ZODB issue. > > Just my 2 cents. > > Raphael > > > > -- > > michael > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > Zope maillist - Zope@zope.org > > http://mail.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://mail.zope.org/mailman/listinfo/zope-announce > > http://mail.zope.org/mailman/listinfo/zope-dev ) > > _______________________________________________ > Zope maillist - Zope@zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > -- michael _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )