On Tue, May 02, 2006 at 10:23:40AM -0400, Tres Seaver wrote:
> I would look for a replication strategy to create your "intermediate"
> storage server: the setup you are trying is not supported by the
> current ZEO setup. Such strategies include:
> - Zope Corp's "Zope Replication Services" product, which keeps the
> "secondary" storage servers synchronized with the primary via
> the "spread" toolkit.
> - DirectoryStorage can be used to do replication via rsync.
... but you can't use a DirectoryStorage replica as a "hot" or "warm" backup.
DirectoryStorage replicas are pulled from the master storage, and no
storage process can be using the replica storage while this pull is
happening - not even in read-only mode. This is documented at
For more background discussion, see these threads -
why hot failover won't work:
some talk about cold failover:
Zope maillist - Zope@zope.org
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