With these massive hard drives (8,12,16,20TB) -
Example.ST16000VN001 ironwolf 16tb
Nonrecoverable Read Errors Rate, Max 1/10^15.
16tb drive has 1.24x10^14 bits of data
Max workload of 180TB/yr/drive
Put 5x 16tb drives in raid 6.
There is a decent probability you will fail to recover your data due to URE for a single drive failure. An almost guaranteed recovery failure if you encounter a dual drive failure.
Some of this depends on the NAS, raid controller, etc. some raid controllers are tolerant and will allow the drive a chance to reread the error block. Others will decide immediately itâ(TM)s an URE and kick the disk out of the array.
With consumer SATA 7200 rebuild rates in the 80MB/s (generous) - letâ(TM)s say you are using 2/3 capacity - 32TB⦠thatâ(TM)s 5+ days to restore parity onto another drive (assuming your raid card can do it that fast and the new drive can sustain the 80MB/s write rate)
Whatever you go with, get setup on wasabi or backblaze and keep stuff backed up!