Thank you for your answer.

All firmware versions are up to date. In addition to what I wrote above, in the Integrated Management Log section - POST Error: 1729-Slot X Drive Array - Disk Performance Optimization Scan in Progress - RAID 5/6 performance may be higher after completion. I got the warning. And secondly - POST Error: 1716-Slot X Drive Array - Unrecoverable Media Errors Detected on Drives during previous Rebuild or Background Surface Analysis (ARM) scan. Errors will be fixed automatically when the sector(s) are overwritten. I am displaying the error. Other than that, everything else seems to be working fine. The disks appear to be in good health. Raid card and battery condition looks good. Due to the possibility of a system bug, I started the secure erase process to check if there are any errors on the disks. At the same time, I turned off the cache feature for raid. I'll try again when the secure erase process is finished.