Here is how we do redundant storage. We extended the Tx* stores with a "Store Manager" that implements all the methods and uses the original Tx* filesystem xml code. But our Store Manager looks in a registry and also calls a secondary store based on the path and event being processed. This secondary store then has full access to the updates of both descriptors (metadata) and content.
We use the secondary stores for integration with external systems by writing an adaptor between the slide store interfaces and the external system's interfaces. For redundant storage we have a JXTA Secondary store that raises an advertisement of a change to either metadata or content, and that advertisement is picked up by other slide repositories that are registered and participants in the JXTA P2P cloud and then they asynchronously either apply the change directly from data in the advertisement or connect back to the changed repository to pick up the change. Because the secondary stores are mapped we can have some content synchronized in this way while other content is not. Michael Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd, #1096 Las Vegas, NV 89156 Phone:(702)866-9034 Cell:(518)378-6154 Fax:(702)974-0341 -----Original Message----- From: Thomas Bellembois [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 29, 2006 4:16 AM To: Slide Users Mailing List Subject: Re: How to restore Slide resources ? Hello ! Sorry, I have just noticed that my explanations are not very clear... I will try to re-explain :-) What I wanted to say is that I think that we could save and restore the ENTIRE Slide content and metadata just by saving the content and metadata root path. Usefull if the Slide backend crashes... At the University of Rennes 1 we intend to use a SAN(NAS) for the Slide backend. This SAN makes snapshots everyday of each file/directory so that a user can restore its documents up to 1 week ago. But with Slide, to restore just one part of the tree (for example a user homedir), I am not sure that we could just restore one directory (and attached metadata) and restart the server. Some French universities are waiting for this kind of functionnalities to use Slide in a production use. Hope it is more clear. Thanks for your help, Regards, Thomas Max Pfingsthorn a écrit : >Hi! > >I'm not sure I understand what you mean.. What do you mean by resources? Can you explain a bit more? > >Bye! >max > > > >>-----Original Message----- >>From: Thomas Bellembois [mailto:[EMAIL PROTECTED] >>Sent: Wednesday, March 29, 2006 11:11 >>To: Slide Users Mailing List >>Subject: How to restore Slide resources ? >> >> >>Hello, >> >>I wonder how we can restore resources on Slide - not the >>entire backend, >>but just some resources ? >>We could propably do that restoring content and handling >>metadata, but >>this is not an easy task... >>Some people are frightened of using Slide in a production environment >>because of that. >> >>Regards, >> >>Thomas >> >>-- >>......-=( Thomas Bellembois )=-...... >>CRI - University of Rennes 1 (France) >>..................................... >> >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >> >> >> >> > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > > -- ......-=( Thomas Bellembois )=-...... CRI - University of Rennes 1 (France) ..................................... --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
