Windows Storage Pool killed my HDD

So I implemented a 3 HDD pool using Parity to combine my 3 separate HDD which each contained Documents on one drive, Music on the other and Photos on the other.

What I liked about the Pool idea was data security in the event of a drive failure.

Within 1 week of creating the pool I got an error messages stating that the Pool had no resilience, and it looked as though it had changed from Parity to a Simple volume, it did not identify a device failure or need of replacement, but I could not get the pool to work again, so thankfully relying on a backup of all my files I sort about reformatting each drive and then breaking up the Pool back into separte drives.

However I could not format or restore the ADATA HV620 drive using various methods such as cmd prompt and NIUBI and A0MEI and then finally I attempted to format the drive using SeaTools from Seagate.

Every test before the SeaTools showed no issues except about 1/3 of the drive having bad sectors - which would explain things, however after finally getting SeaTools to format the drive after every other method failed the drive has come back to life and no method used since has been able to find bad sectors or drive issues.

I'm now back to using the drives separately as this Pool scenario is the biggest pain in the backside and did not at all preserve data in case of a drive failure.