Hi BoSsNeX,
I suspect fault with the SAS cable. Kindly check the SAS cable spare part number used to connect between the H241 controller and the MSA2040 SAS controller.
As per quickspecs we should be using following 12G SAS cables for 12G SAS initator.
QuickSpecs : https://h20195.www2.hpe.com/v2/GetPDF.aspx/c04123144
HP External 1.0m (3ft) Mini-SAS HD 4x to Mini-SAS HD 4x Cable 716195-B21
HP External 2.0m (6ft) Mini-SAS HD 4x to Mini-SAS HD 4x Cable 716197-B21
HP External 4.0m (13ft) Mini-SAS HD 4x to Mini-SAS HD 4x Cable 716199-B21
In case issue persist with the above P/N cables, capture AHS report and Store logs from MSA and open ticket with HPE Support.
Hope this helps.