Sun Fire X4150 Boot Error

Dear ALL,

1 of my customer is running VMware ESX on the above mentioned System.

However, the system is down and unable to power up.

Upon powering up, In the Sun STK RAID Controller ACU. It show "No Drive detected".

When we try to select HDD. It show "no device".

In POST, "No Logical Drive Found" right after "No Int 13 Drives to support" and BIOS not installed.

Has anyone hit this problem?

ILOM disk is all absent except HDD bay 6 & 7

-> show -o table -level all /SYS
Target              | Property               | Value                          
--------------------+------------------------+---------------------------------
/SYS                | type                   | Host System                    
/SYS                | chassis_name           | SUN FIRE X4150