# E391 DAQ meeting, Dec.13, 2001 System Choice for Front-end. 1) One CPU reads the whole FASTBUS and TKO data. TKO -- SMP --------| TKO -- SMP --------+ CPU54 -------------> storage side FastBus,NGF -------| 100Base FastBus,NGF -------| 2) Parallel readout by multiple CPUs TKO -- SMP ---| TKO -- SMP ---+ CPU54 ----| + collection server -------------> storage side FastBus,NGF --- CPU54 ----| 100 or 1000Base FastBus,NGF --- CPU54 ----| 100Base System Choice for Storage side. a) Send data to KEKCC (HPSS server) via network. front-end side -------------------> KEKCC storage 100 or 1000base b) Local storage (single) front-end side ------------------> Linux with DLT and 500G disk 100 or 1000base c) Local storage (dual) --> Linux with DLT and 100G disk frong-end side -------------------X switch per day 100 or 1000base --> Linux with DLT and 100G disk