time machine - backups inaccessible
hi,
I'm using three Time Machine disks that I connect alternately to ensure double redundancy on my backups. My problem is that none of my backups, going back to march 2014, are available. I have access only to the most recent backup and only for the Desktop. Is this a Yosemite issue?
PS I haven't found a Time Machine community!
MacBook Pro • 2.5GHz i5 • 8GB memory • 128GB SSD • OS X 10.10