Open Memory Interface (OMI)
IBM's proprietary high-speed serial memory interconnect, replacing direct DDR signaling, already used in Power10 and Power11's DDR5 DDIMM memory.
OMI supports up to 32 DDR5 ports per socket versus 8-12 with conventional direct-attach DDR, and can reroute around a failed memory lane instead of losing an entire channel -- a reliability advantage central to IBM's RAS-first design philosophy. Expected, but not confirmed, to continue into Power12.
Related Terms
Power 10
IBM's prior-generation Power processor family (S1014, S1022, S1022s, S1024, E1050, E1080), launched in 2021, two generations behind the expected Power12.
Power 11
IBM's current, shipping Power processor and server generation, announced July 2025, spanning the entry S1112 through the flagship E1180.
RAS (Reliability, Availability, Serviceability)
The engineering discipline, central to every IBM Power generation, of designing hardware that minimizes downtime and data loss for mission-critical enterprise workloads.