Question 1

Can drive brands, model #s, or sizes be mixed in this?

Accepted Answer

Much depends on your configuration here.  If you're building a RAID configuration (as opposed to JBOD) then you'd be unwise to use anything but identical (and I recommend approved by QNAP) drives here.  Sticking with the recommended drives saves you a lot of hassle with support.  Pretty much any time you're doing a RAID configuration it's best (though I won't swear that it's an absolute necessity) to stick with the same drives across the array.

This has been a pretty nice NAS despite a slightly slow interface and the frequent Japanese (or Korean, not sure) remaining in the English version of the UI.

Question 2

Is this model (TS-421) compatible with 2.5" hard drives?

Accepted Answer

Yes it can use either 2.5 or 3.5 drives. You can find a list of compatible 2.5 and 3.5 drives and UPSs on the QNAP site. I found that out the hard way ??

Questions & Answers