Can’t remove or clear old drives configuration from PERC 6/I (Dell PowerEdge server 2950)

Can’t remove or clear old drives configuration from PERC 6/I controller after we face problem with the old drives, perc 6/i

I use to have 4 hard drives configured as raid 5 on PERC 6/I; two of them crashed and I purchased another two drives as replacement

Now whenever I start configurations for the raid still I can see the old drives on PERC configuration screen, the old drives was SEGATE SAS and the new drives are DELL SAS

I have tried the following

-          Shutting down the server completely and remove all drives

-          Starting the server without drives

-          Then putting the drives one by one and monitor the PD management on the PERC configuration screen

-          The controller can’t identify the DELL drives, it shows only SEGATE

-          I tried to change the slot for drives between drives, no chance, the same problem

-          I tried to clear foreign configuration, not fixed

-          Remove all configuration and configure again, not fixed

Looks like the are some data available on the raid itself; but I can’t clear it, any advice please