My pegasus2 R8 PD5 passed away yesterday. Today, I replaced the hard drive and is rebuilding it. PD4 keeps reminding me that it has found bad sectors. Yesterday, PD5 kept reminding me that the hard drive died after finding bad sectors. My array is RAID5. I am worried that PD4 will die during reconstruction. I found that the hard drive used by R8 is ST3000DM001, which is the hard drive that everyone has complained about before. Do I need to consider replacing all hard drives? The reconstruction progress is currently at 52%. Do I need to transfer my data during this period?