Hello [NAME], It's difficult to say what could be causing the issue without more information. If we focus on a pure hardware issue. The main possible reason for a behavior like this is an outdated firmware or incompatible drives. So, first make sure all firmware is updated: SC Storage Customer Notification: HDD and SSD Firmware Best Practices in SC Series Systems [URL] Even for new disks, as they may initially have an outdated firmware. I don't think it is a problem of incompatible drives, if the partner suggested you the disks. But make sure just to double-check that they are compatible. I strongly suggest you to open a case with phone Support and provide them a log, so they can check what may be causing the error. Regards.
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  
The same disk failed 3 times