I'm back again after several years of happy use of the NAS in question.
Problem: I have upgraded my mac to Yosemite and I verified the proper operation of TIME MACHINE.
So far, so good. Backup running in 20 hours, I check on the content … all right. One night by accident, from the preferences panel of TM have selected a disk other than the NAS which customarily do backups. I realize and riseleziono the disc placed on the NAS historical and surprise, surprise does not connect to MyBookWorld. Strangely tells me that the device is no longer reachable or that the IP address has changed … but the shared folders and type DOWNLOAD PUBBLIC are there and available. I try to connect via AFP, asking me the Pwd, * backup* but does not recognize it.
Same with the other protocols. I understand that you probably cut a chive registry and after several days spent scrutinizing the various community did not find anything that can help me.
I also found a few pointers on using SSH terminal to change but to no avail … I would avoid disk recovery to factory settings to not erase the contents (850 GB)
Thank you for your attention and cordially greet