xl: Quit early when EC config is incorrect (#16390)

Co-authored-by: Anis Elleuch <anis@min.io>

cmd/server-main.go

@@ -722,6 +722,11 @@ func serverMain(ctx *cli.Context) {
 
 		// Prints the formatted startup message, if err is not nil then it prints additional information as well.
 		printStartupMessage(getAPIEndpoints(), err)
+
+		// Print a warning at the end of the startup banner so it is more noticeable
+		if globalStorageClass.GetParityForSC("") == 0 {
+			logger.Error("Warning: The standard parity is set to 0. This can lead to data loss.")
+		}
 	}()
 
 	region := globalSite.Region