January 26, 20206 yr I'm was running an older server with a mixture of 1 & 2 TB drives and a 4TB parity. Everything ran fine. I replaced a 2TB data drive with a 4TB drive. The rebuild goes fine until it gets to about 73% when it slows to a crawl. I've restarted it multiple times and it happens at the same spot. tower-diagnostics-20200126-0939.zip Edited January 26, 20206 yr by luke duke
January 26, 20206 yr Community Expert It looks like your parity disk is in bad shape as the following SMART attributes do not look good: 5 Reallocated_Sector_Ct 0x0033 195 195 140 Pre-fail Always - 175 196 Reallocated_Event_Count 0x0032 180 180 000 Old_age Always - 20 197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 65524 If you have notifications enabled I am surtrised that Unraid has not been telling you about these
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