WD RED Pro worse NRE than RED Plus?

[cbf123]

I'm looking at hard drives for a NAS and was comparing specs. The max non-recoverable read error rate on the WD Red Plus is 1 in 10^14, while the WD Red Pro is 10 in 10^14, or up to ten times worse. Just as a comparison, the Seagate Ironwolf drives are rated for 1 in 10^15, or ten times better than the Red Plus.

Anyone know what's going on here?

 

[mwroobel]

Enterprise drives are generally 1 in 10^15, consumer 1 in 10^14 and NAS models straddle both. This is why you have backups and/or failure-aware filesystems