Uncovering QNAP NAS Bad Block Messages: Data Protection from Hard Drive to RAID

The marketing team of QNAP Systems, Inc. had published an interesting blog titled Uncovering QNAP NAS Bad Block Messages: Data Protection from Hard Drive to RAID.

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Introduction:
If you’ve noticed ‘Bad Block’ error messages appearing in the management interface while using QNAP NAS, you might be wondering: why do these warnings appear differently on the hard drive status page compared to the RAID management page? At times, a hard drive may even be marked as faulty and removed from the RAID array, even though its S.M.A.R.T. data or Bad Block Scan results indicate that the drive is still functioning normally. In fact, these scenarios reflect the operating logic of different layers within storage systems, rather than suggesting a system malfunction.

This article aims to help QNAP users understand 3 key concepts behind a commonly asked question: Hard Drive Bad Sectors, SSD Bad Blocks, and RAID Bad Blocks. By clarifying the differences between them, you’ll gain a better understanding of how these error messages help your QNAP NAS protect your data, and feel more confident when dealing with changes in hard drive and RAID status.

To be continued….