IBM’s zEnterprise servers use a type of memory configuration known as RAIM (redundant array of independent memory).
“RAIM is similar to what is known in the disk storage industry as RAID,” Ryan said. “RAIM technology provides protection for the dynamic random access memory (DRAM), dual inline memory modules (DIMMs), and at the memory channel level, delivers the most resilient memory subsystem to date.” According to IBM, the zBC12 supports up to 512 GB of real (usable) RAIM-protected memory.
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