Drobo dismounts and then it rebuilds

Hello everyone,

My drobo has been great other than it disappearing(dismounting) from time to time.

Then the Drobo rebuilds itself. It takes about 4 hours, and then it remounts itself.

I have a 2 volumes(partitions) backup and storage1. I did this have Timemachine and other backups go to the backup volume and all other project work and Aperture vault go to the storage1 volume.

I am running the newest firmware. MacbookPro OS 10.6

Thoughts on how to fix this problem.

thanks for the time