Hey All,
I've been running Unraid for about a year now but recent parity checks have returned some worrying results. I run a scheduled monthly check and for the first 8 months or so everything was fine and it resulted in 0 errors but the last few months have been getting increasingly bad;
01/04/2020 = 0 Errors
01/05/2020 = 120 Errors
01/06/2020 = 1732 Errors
After this most recent monthly check I ran a manual check last night and the test returned a result of 3926 errors and also a SMART warning for one of the parity drives ("reported uncorrect is 1"). Since the monthly check and last night I would estimate another ~40GB of data was added to the data drives.
Quick background on the installed drives;
Data Array
2 x 3TB Seagate Ironwolf (Model: ST3000VN007)
3 x 3TB WD Red (older non SMR drives, model WDC_WD30EFRX)
Parity Array
2 x 4TB Seagate Barracuda (Model: ST4000DM004), pulled from external USB enclosures
Controller
LSI 9200-8i (I suspect this to be a Chinese copy)
I suspect that the 4TB Barracuda drives are not up to the stress of parity and 24/7 operation and was going to order 6TB Ironwolf drives but wanted to get the your opinion before spending any cash.
Thanks