I'm using the Preclear plugin to prep/test my drives to create my array.   While they were zeroing they were cruising along nicely (150-220 mbps each) but now that one of my drives has started the read process, performance has hit fallen off signficantly.     Any thoughts on what to check?  SMART is not reporting any errors beyond the typical ECC errors for high capacity drives.

Edited January 26, 20215 yr by @zen

ECC errors are not ‘typical’ - they indicate connection issues !   A occasional ECC error is not normally a problem but any more of that will impact performance as the system attempts retries on the drive operation it is trying to perform.

 

if you want any sort of informed feedback you should provide your system’s diagnostics zip file (obtained. Is Tools -> Diagnostics) attached to your next post in this thread.

I think I was CPU bound.. time for more horsepower.  But here's the diagnostic info.  But I would appreciate it if someone in the know took a look and let me know if there were any other issues.

w.a.r.appserver-diagnostics-20210126-0720.zip

No errors logged, just let it go on for now.