We have Tier I in place and there are no issues; however, we are looking into an iscsi/usb3.0
Tier III for $100 per 1 TB. What are other people using in the same price range. Backblaze, etc.
have all been looked at.
I have used the Iomega NAS devices for this. I would just make sure that whatever you get is on the HCL.