I have a Drobo v2.
It was nearing capacity so replaced a 500Gb HD with a 1Tb HD. The relayout process began, ran overnight and the following day I lost the ability to access the Drobo. I rebooted my Mac and the drobo restarted. Upon restart the Drobo came up with 4 RED lights (1 blinking - indicating a failed drive) - not the HD I added though, one of the existing drives prior to adding the new disk.
So it appears that during the relayout one of the pre-existing drives failed. I have a case open with support but that process is fairly casual in the sense that this is high priority to me and slower priority to Drobo - I did get a call today and tried a few suggestions - no luck yet.
I am wondering if this is recoverable? Or will I spend the next week with support/email to end up nowhere? Anyone have any experience with this. It seems that Drobos should come in 2 paks, one for using and 1 to backup the one you are using.