Question
For LSI Host Bus Adapter (HBA) firmware, what is the difference between IT mode and IR mode?
Answer
The two firmware types are Initiator Target (IT) and Integrated RAID (IR).
IR is the typical hardware RAID firmware that the internal cards or boards
ship with.

The IT firmware, on the other hand, is the Initiator Target
firmware which is designed to allow a SAS HBA to connect to up to 256
devices using SAS Expanders. The IT firmware is typically shipped on
external cards. The IT firmware does not have any RAID capabilities and
simply acts as an HBA.
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FAQ Stats
FAQ ID Related Category / Keyword Date Posted Code
16169 Other:
- Firmware/BIOS related
- Support Information
Peripherals:
- RAID card
- Riser Cards
Storage:
- Expanders
- SAS
05/10/13


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