И? Где хм? На каждой ноде стоит полноценный xeon с кастом фирмварью. Бэкплейн у FS пассивный, это хрень сантиметров 12-15 толщиной, я его в руках держал.
To take IBM FlashCore architecture further and expand into other products, IBM FlashCore would need to move from a custom form factor to a common standard form factor as well as a common interface. The common form factor chosen was the 15mm 2.5” U.2 form factor. The common interface was the NVMe protocol over a PCIe interface.