I'm new to the forum so bear with me if I'm breaking any ground rules. This looked like the right place for my question though....
My linux server is run with an Areca 1220 PCI-X raid card. All eight slots are taken, 4 drives form a raid-5 array (1TB each), 3 drives form a raid-1 array (250GB each) and one drive is pass-through (2TB).
The OS is run from the raid-1 array.
Now, I have an urgent storage need. My idea is that the raid-1 array can do with just two drives just fine. That would give me the option to plug in an extra 2TB drive I have laying around as passthrough.
When I pull the 3rd 250GB drive, the array becomes degraded as expected, but besides that, runs just fine.
However, I'd like the array-state to be set to normal / aka have the array be rebuilt over just two drives without data loss.
I've searched around, but can't find this question on any forums. I e-mailed Areca and they reply the following:
But with raid-1, data is just duplicated over all drives right? So I'm not sure about this answer. I've read methods using the RESETCAPACITY command, but that doesn't seem to work?
Anyone with good ideas? Thanks in advance.