4 Things to Know About the TrueNAS Mini X+’s Drive Bays

The TrueNAS Mini X+ maxes out at four drive bays. That is enough for a mirrored pair or a RAID-Z1 stripe.

You cannot add more drive bays to this model. For higher density, you must step up to the R-series.

Four bays limit your RAID options. You get only basic redundancy, not the flexibility of larger arrays.

This is a deliberate design choice, not a flaw. TrueNAS keeps the Mini X+ compact and affordable by capping bays at four.