RAID with mismatched drive sizes

[dmac257]

My understanding is that if you do RAID 1 with a 750gig and a 1TB drive you only get the storage of the smallest drive.  Is this true for motherboard managed RAID from UEFI or for software RAID solutions as well.  CAN you create a LOGICAL partition on the 1TB drive to make the "wasted" space usable or even use equal sized LOGICAL partitions from two different sized drives to create the RAID?

Dmac257

[Bombastinator]

43 minutes ago, dmac257 said:

My understanding is that if you do RAID 1 with a 750gig and a 1TB drive you only get the storage of the smallest drive.  Is this true for motherboard managed RAID from UEFI or for software RAID solutions as well.  CAN you create a LOGICAL partition on the 1TB drive to make the "wasted" space usable or even use equal sized LOGICAL partitions from two different sized drives to create the RAID?

Dmac257

My memory is With some stuff they actually have to be identical models drives not just the same size. Depends on what features are implemented I suspect.  The only thing I know of that will effectively use drives of different sizes is JABOD. Which is a bit like radi0 but without the speed boost.  You might be able to raid1 two JABODs though I think as long as they’re the same total size.  Never tried it myself.  I stuck to simple and used identical drives.