On a system with the Sun Storage 6 Gb/s SAS PCIe HBA (internal or external), attempting to create a RAID 10 volume using raidconfig with the --level=10 option will yield the following message: "ERROR: RAID level not supported by controller."
Workaround
The FCODE version 1.00.65 on the Sun Storage 6 Gb/s SAS PCIe HBA (internal or external) does not support RAID 10. It does support an even (four or more) or odd (3 or more) number of disks used in a RAID level 1e. Use RAID level 1e in place of RAID level 10.
For example, to create a RAID 1e volume on four disks in the system, type:
raidconfig create raid --level=1e -d c0d0,c0d1,c0d2,c0d3
This RAID volume will be seen as RAID 1e by raidconfig, but seen as RAID 10 by the HBA's configuration utility (sas2ircu).
This is expected behavior with the Sun Storage 6 Gb/s SAS PCIe HBA using FCODE version 1.00.65.