Hitachi announced the 730FT and 750FT fault-tolerant UNIX servers in January 1995 as part of its 3500 series. The models began shipping in July 1995. The servers’ fault-tolerant functionality was derived from a quad processor redundancy (QPR) architecture, which had two redundant-processor systems (for a total of four processors).
|Processors||PA-7100 80MHz×4||PA-7100 100MHz×4|
|Main memory capacity||64MB-1024MB×2|
|Expandable I/O slots||4 x 2 (standard) or 7 x 2 (optional)|