Assume $11.88/TB [1], 5W per 4TB disk, and $0.2/kWh. We’re talking $1.19mm NRC + $18.3k MRC.
With a 9% discount rate, that’s only $3.63 million dollars in present value to pay for infinity months.
Of course there are other costs (and cheaper more efficient disks; and cheaper power; and your discount might be less aggressive; and server aren’t free tho you only need like 1 server for 100 disks with SAS expanders since most data is never read; and maintenance), but the $200 million number you got seems very reasonable to me.
With a 9% discount rate, that’s only $3.63 million dollars in present value to pay for infinity months.
Of course there are other costs (and cheaper more efficient disks; and cheaper power; and your discount might be less aggressive; and server aren’t free tho you only need like 1 server for 100 disks with SAS expanders since most data is never read; and maintenance), but the $200 million number you got seems very reasonable to me.
1: https://diskprices.com/