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storage - What is the difference between a HBA card and a RAID card?

I thought I knew the difference between HBA and RAID.



In my mind, HBA is offloading from the main motherboard/CPU and is simply JBOD... usually has an external SAS ports, whilst a RAID card does the same job as HBA but adds all the nice RAID levels and possibly battery backup + other benefits.



After looking at the LSI website for a product, I see that they have HBA cards that have built in RAID, for example the LSI SAS 9211-8i Host Bus Adapter.




So... Clearly I am wrong!



What is the difference between an HBA card and a RAID card?

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