they should be added through freenas and formatted, and then restore the data? That is the only option then?
i don't have that much free space on other devices :(
sandoz, yeah, that's the only real solution. Even other filesystems FreeNAS CAN read are mostly only read-only and meant to be used for data migration. FreeNAS is designed for use with ZFS with UFS as an option for low-resource systems. Please read the manual at http://doc.freenas.org and forum stickies for the answers to some of the usual questions about FreeNAS.