I am facing below situation in dell poweredge
#server1># smartctl -A /dev/sda -d sat+megaraid,0
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-693.11.6.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org
Read Device Identity failed...