I been used DVR with has 8 nos of HDD,recently i had problem that the DVR showing in screen ,request to choose proper HDD to reboot the system. When restart the DVR it was coming to normal condition and it working good .But after while may be in 2 or 3 days the DVR it was display again the same error message .So that i was send it for repair and the technician request me to change all my primary and secondary HDD and also the power supply. He gave reason that the all HDD was spoiled because of the HDDs has not obtain proper power from power supply. So can i help me on this matter and isn’t what the technician told is be right?