Secondary storage was composed of up to 8 of the CDC 9432D removable-media disk drive devices. Capacity of one set of disk platters was about 4 million 6-bit words or 768,000 words of HRS-100 computer.
Secondary storage consisted of up to 8 CDC 9432D removable-media disk drives, each capable of storing approximately 4 million 6-bit words or 768,000 words of HRS-100 computer data.