Upon booting the Dell PowerEdge R720 server with two Dell 6Gbps SAS HBAs that are installed and connected to a two drive Dell PowerVault TL4000 I got this error message
Turns out this is a normal error. Page 25 of ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_dell_adapters/dell-sas-hba-6gbps_User’s%20Guide_en-us.pdf
Basically because it is a tape HBA, the error is saying it cant be used to boot off it.
The HBAs and connected drives worked fine from within Windows, just a bit odd to see an error like this!