I've been running freenas with four 2TB disks with an arc-1220 controller. With the disks almost full, I've added 4 more identical 2TB disks and successfully migrated and expanded them on the arc-1220 menu. However, upon booting the system, FreeNAS shows me contradicting information. Under the Disks|Management tab it shows me a RAID volume of 13351440MB but the system information shows me the old capacity of 5.3TB, used 4.9TB with 12GB left. Is there a way to get FreeNAS to recognize the new capacity without destroying/losing data? I'd appreciate a detailed response since I'm still not very familiar with freenas. Honestly, I don't even remember exactly how I set it up in the first place but I could afford to mess with the settings since the disks were empty back then. I'm using FreeNAS version 0.7.1 revision 4982
If you have a partition on the Areca hardware RAID array; that means you need to expand the partition as well. FreeNAS uses a more complicated labeling than i recommend. Different versions of FreeNAS also have different ways of doing it; making this more complicated.
The output of above commands should give me a fair clue however. You would need to log into SSH in order to get the required output.