I reported about my problems with the Time Machine drive which was too small. So I bought a Drobo mass storage device beginning of July since I wanted a reliable and extensible storage solution. I am using it for Time Machine backups. only. Setting it up was pretty easy. I run the Time Machine in a sparse bundle creating with TimeTamer.
But initially the system was not very stable. Once it crashed – but did not loose the data. From time to time it refused to boot or to wake up. Finally it failed entirely. All lights were on but nothing else happened.
I contacted drobo hotline in Germany. We tried to reset the device – without success. Then I got it replaced within one day. Perfect service.
The replacement device is now very stable and boots much faster than the original one. It can happen that a new device causes problems. As long as the service of the manufacturer is ok, this is not a problem. The Drobo service was perfect in my case.