Buying disk can by a job on it self. I ussaly search for Refubisched “new” disks, Forget internal disks, only external since they are cheaper…(I break them open and install them as internals)
Refurbished get me an other 10/20 bucks of the new price…
I don’t know where you live But my search extents the whole of Europe but shipment must be included in the price…
I just bought 8TB for € 140,-- Euro (about 158 US dollars)
Not cheap but better then € 180,-- euro new (About 200,-- us dollars)
I worked with Second hand disks, some still run perfect others are defunk…so mixed feelings about that.
Since Hard disk are the busnizz end of your BURST endevour…
Make sure not to use more then 4 USB disks… (Search time gets really low)
8 Channel SATA controllers are way cheaper then SAS controller set-up but in the end also slower.
SAS controllers need a fan. (IT is wise to fan cool SATA controllers aswel)
You can have way more drives then the usual 24 drive letters!
If using SATA controllers make sure to use the same make, model, and type.
TIP6. Check your Chinese cables / Voltages before hook-up and switching on HDD’s (I blew up several of perfectly fine disks using a faulty SATA power cable)
Good luck sourcing disks~