I faced the same issue ..We have
HP DL 380 G7 running ESX6.0 Update 2 3620759-HPE-600.9.6.0.49 version OS.
Brocade HBA card conneted to SAN storage VNX5100 through SAN switch.
Due to original shipped 300 GB SAS 10K HDD failure, we decided to upgrade with higher 900 GB capacity drive.
we configure HDD in mirror mode 1+0.
After inserting system got hung up at this vmkibft loaded screen.I tried many things, Upgrading HP firmware,but nothing happened.
Then i saw 2 version of ESX Update 3 ISOs.
Solution :- Dont go for ESXi-6.0.0-Update3-9313334-HPE-preGen9-600.9.8.5.4
instead go for ESXi-6.0.0-Update3-10719132-HPE-Gen9plus-600.10.4.0.15
Now system gets boot up in 3 minute.
Hope this help