I'm considering building a FreeNAS box to replace a Synology DS1511 - mainly because I'd like it as a project with more flexibility.
Couple questions: 1. Most people recommend a hardware RAID controller - is it worth it that much over using software RAID? I'd be running ZFS, and probably RAID-5. 2. Which RAID type would allow me to swap a single drive for a larger one, and rebuild to that? I.e. so I can replace my 2TB drives with 4TB over time, as money allows.