April 12Apr 12 I removed an old 8TB Red today and put in a new 16TB Red. On first reboot I had two additional drives show up as missing. Powered back down and re-seated all sata cables and had a successful boot. I started the re-sync and am only getting 300kbps. I am attaching a before and after diagnostics. I paused the rebuild and ran a smart report on the new drive as well. Drive was fine with normal pre-clear so I am not sure what the problem is. Any help would be appreciated as a 500 day rebuild is not going to work. tower-diagnostics-20260412-0908.zip tower-smart-20260412-0859.zip tower-diagnostics-20260412-0609.zip
April 12Apr 12 Community Expert The syslog in the diagnostics shows that you are getting continual resets on disk4. This suggest a connection issue of some sort (SATA or power).
April 12Apr 12 Author I have tried several different SATA cables and power sources and had about 10 minutes of full speed transfer and then it started doing the same thing again. After the last reboot unraid can no longer find the device. I tried just returning to the old 8tb device but I am getting an error. Stopped. Replacement disk is too small. How can I return to the old drive until I figure out the new drives actual issue?
April 12Apr 12 Community Expert 1 hour ago, black296tuuk said:How can I return to the old drive until I figure out the new drives actual issue?New Confighttps://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/array/array-health-and-maintenance/#reset-the-array-configuration
April 13Apr 13 Author 4 hours ago, trurl said:New Confighttps://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/array/array-health-and-maintenance/#reset-the-array-configurationI haven't done this yet, I am manually backing up some data because I feel like I have lost control of the repair and I want to make sure I have the family stuff in a second place. I have determined that it is not the drive, sata cable, or power. I tried doing a rebuild with a powered USB enclosure and the drive did the same thing. I tried a sata port not on the motherboard. I also tried with a different untested 16tb drive. It does the same thing. The drive ran a full pre-scan without making a sound, but as soon as I start the rebuild I can hear a different drive in the case start clicking like it is bad and the transfer goes from 250mb down to below 1mb. I have the array up now everything runs fine? Does anything else in the diagnostics fit with what I am describing? tower-diagnostics-20260412-1917.zip
April 13Apr 13 Community Expert Solution 54 minutes ago, black296tuuk said:tried doing a rebuild with a powered USB enclosureUSB not recommended for assigned disks for many reasons.55 minutes ago, black296tuuk said:as soon as I start the rebuild I can hear a different drive in the case start clicking like it is badThis sounds like a power issue.
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