Hello,
Bon, j'ai eu la réponse du ticket chez Synology, je vous copie/colle leur réponse, après quelques échanges:
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As far as we know from OVH support, they told us their rsync service is not really compatible with traditional one as they will take one more "translation" on their storage which rsync won't do this way originally.
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In fact, when you put files on the server (using rsync or scp) with this offer, theses files are put in some kind of "sessions". ( I've been given an url where I can manage these sessions and ask for a restore operation on this or that particular session). ==============================
So even the upload command we issued could be successful but the consecutive stat/restore commands won't work as the remote data structure (in OVH side) is different as we expected.
If we understand correctly from OVH support, we are able to manually issue the upload command but we need follow the SOP they provided for restore.
http://help.ovh.ie/RecoverDatasBackup
However, currently it's NOT possible to make it done from backup&restore UI.
Please consult OVH support for details and sorry for this inconvenience.
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Bref, pour le moment, ca ne fonctionne pas, apparemment à cause de certaines spécificités chez OVH. Qu'avez-vous trouvé comme autre solution d'archive depuis un Synology ?