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Forum Discussion
notspam
Feb 15, 2026Guide
First experience with failed disk
I have a RN104 in RAID5 (4x 2TB) configuration and one disk failed. This is my first time having to replaced a failed disk (also have a RN316 and a RN102). I backed up to a portable USB drive before ...
StephenB
Feb 16, 2026Guru - Experienced User
notspam wrote:Pulled out the offending disk and popped-in the replacement
That is the right process. What model is the replacement disk? Most desktop drives are SMR, which is not a good technology for ReadyNAS.
You might also want to run the disk test from the volume settings wheel. That will run in the background - the log will show the status when it completes.
notspam
Feb 16, 2026Guide
I went cheap with desktop disks when I set up RAID5 but I am setting aside money for NAS-grade ones. Just did not have the budget then. Great idea I will run the disk test now.
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