I agree that the rebuild ist not finished yet. For the second Event it seems that one or more Host in the Storagegroup "Cluster POC" got an connection Issue. So you should check the Initiatorstate and in addition check the connection on host side itself. Regards
I changed a faulted disk in a CX4 240 following USM instructions normally it's working (no red light anymore) but when I checked the report and the SPcollect it seems that something is still wrong .   SP collect output :        Raid     Drive                                                                                                                                              Cur     Max Disk  Group Capacity Intfc Vendor   Drive Type  Serial Number  Part Number TLA Number Firmware State Replacing Speed Speed 1.2.14 20     600GB    FC HITACHI                    LXWWAVHL DG118032690 005049694       C3A8  Enabled  1_3_4       4         4 1.3.4   27     600GB    FC HITACHI   Viper-C        J9XGEKHL      118032690 005049033       C3A8  Equalizing --            4        4 Report output Genarl-Issue :  Critical    Critical   What does the second critical message means ??!! Thank you in advance.
changing fault disk, checking it with SPcollect, Report output