1. After communication with LSI, the full name of PermDegrd is confirmed to be permanently degraded. The PermDegrd definition from LSI is as follows: after more than 64 consecutive bad blocks are recorded in the bad block table of the hard disk, the firmware identifies the RAID state of the hard disk to be PermDegrd, as shown in Figure 2.
Figure 2 PermDegrd definition from LSI
2. After the RAID state becomes PermDegrd, the hard disk RAID cannot restore to the best state, and the hard disk cannot be configured to a new RAID with new hard disks.