I have been looking at the Drobo
unit but it has a couple of shortcomings that I am sure a Linux distro must be able to overcome. Firstly, it is a USB device with no Ethernet and secondly it is fairly expensive.
My requirements are as follows.
1) Support for multiple drives presented to the network as one large drive.
2) Data protection, like a raid array.
3) The ability to add and remove drives without loosing data integrity and without having to rebuild the array.
4) Not requiring all drives to be of the same capacity.
I have looked into FreeNAS
and none of these support points 3 and 4 on the list.
Are there any fairly easy to configure distros that will achieve this?