Host bus adapter: connects a server to storage. For Storage Spaces it must pass disks straight through, so a RAID controller is no good.
Also called host bus adapter.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains HBA in context, with comparison tables and the common traps.
Terms in this definition
- General-purpose v1
The older storage account kind (
Storage), which lacks access tiers, Archive and premium file shares and retires on 13 October 2026. Converting to ZRS requires first upgrading to GPv2, a one-way change. - RAID
Grouping drives for speed or resilience, by mirroring (level 1) or parity (level 5), say. Software-defined versions come from Storage Spaces, and Storage Spaces Direct expects pass-through controllers.