Time Machine has it seen it's days
It's been a while since Time Machine was release but i think over the years it has become more and more unstable and I think it's no completly unreliable.
I have started using Time Machine first with local attached disks. Everything was good but limited in space and accessibility. This was abandoned when I bought my second Mac and wanted to have consolidated backups.
Move on to a Time Capsule for 2 Macs which worked fine until the Time Capsule eventually died. Was a common problem back due to power supply dying. Even now using a Time Capsule with a maximum of 3TB is not an option for me.
Got onto a Synology NAS box which is great but now and then it would just wipe out a complete backup and start new. People are pointing fingers at Netatalk which is all NAS vendors implementation of AFP protocol used for doing the network based backups.
Eventually got myself a Mac Mini based OS X Server and setup Time Machine Server backup to local attached Firewire drive. Only option as disk space is limited inside the Mac Mini (max 2 x 2.5 drives). And guess what that also now fails by corrupting the backup files and wanting to start new, same as NAS.
So now I have kind of come to the end of the road. Despite of going back to connect a local disk to each and every Mac in my house there is no other reliable option to do a Time Machine backup. I got 5 Macs in my house now, 2 Macbooks that are floating around and not stationary. DAS is just no possible.
Not sure if I am missing something here but is there any other option I haven't tried?