I'll reiterate the suggestion I made before: Let's get an SX62 and never worry about the archive space again. It's 10€ more. If we want to get it fast, we'll have to order it from the Helsinki location as we can expect long waiting times right now in their German locations (up to 10 workdays for the SX62 according to them). With your AX51 suggestion, we'll have an effective 8TB (RAID1) for 54€/m (Helsinki location) but with the SX62 we'll have an effective 30TB (RAID5) for 64€/m (Helsinki location). It seems like a much better bang for the buck to me.