Future iterations of H500, or its successor, must incorporate 3.5 Hard Disk Drives (HDD) form factor. I can understand, from an engineering perspective to keep the device small, to go with 2.5 form factor HDDs, and the tranfer sppeds afforded by Solid State Drives (SSD). This is a fail to consumers when it claims up to 16TB expansion. Try and find a 16TB 2.5 HDD for a reasonable price.

As consumers, we have far more choices for surveillance-grade HDDs in 3.5 form factor, at far cheaper prices than its 2.5 counterparts. Not many HDD manufacturers produce surveillance-grade HDDs in 2.5.