we have one CT-SC4020 Storage system which is just out of warrant, there is one disk fails 3 times starting from middle of Dec 2022, we ordered new replacement disk from our service partner and get it replaced, however it failed again after 1 or 2 days. 

The recent replacement is on 27th Dec afternoon, and it failed again last night, after 1 day more. I checked the log file and found the following:

FRU ticket created for failed device Disk 154 Position[2-5] Alert Critical No FRU Ticket Alert Hardware

Today I soft reseat the disk and bring it back online, however the partner said its not advise to do that. ok anyway I am wondering if there is any tools we can do further troubleshooting as its not likely that all new 3 disks are having issue.

Many thanks in advanced

Shermaine