I have a Pegasus R6 with 6 x 2TB Hitachi HDS72302 Deskstar 7k3000 HDS723020BLA642 P/N 0F121115


One of the drives is 'dead' and needs replacing, but I'm having great difficulty finding an identical drive.  They are either 'refurbished' on eBay or astronomical prices.  Can anyone recommend a replacement in 2020.  I assume that good quality NAS drives would be suitable but would the system see them.

If I eventually have to replace all 6 drives to keep them the same, what would be a good drive to use?