Se não houver setores remapeados ou pendentes, o seu disco não não saberá sobre quaisquer setores defeituosos. É mais provável que algum outro componente envolvido no acesso ao disco esteja danificado, como a cabeça ou o que quer que seja.
Dito isso, estou com o wiki unRAID sobre isso:
PLEASE completely ignore the RAW_VALUE number! Only Seagates report the raw value, which yes, does appear to be the number of raw read errors, but should be ignored, completely. All other drives have raw read errors too, but do not report them, leaving this value as zero only. To repeat, Seagates are not worse than other drives because they appear to have raw read errors, rather they are the only one to report the number. I suspect that others do not report the number to avoid a lot of confusion, and questions for their tech support people. Seagate leaves those of us who provide tech support the job of answering the constant questions about this number. Hopefully now that you understand this, you will never bother a kind IT person with questions about the Raw_Read_Error_Rate RAW_VALUE again?
Então, sim, você pode continuar usando o disco sem problemas. O ZFS irá despejá-lo do vdev se muitos erros tiverem ocorrido.