CCJ Hardware Configuration idea for discussion Plan-1a

• DataIn: Tape/disk to server
  • 6 tape drives to server = 67.5 Mbps (for data mining)
  • Cache disk to server = 120 Mbps (for physics analysis)
  • Totally 190 MB/s from tape and disk
• DataFeed: Network IO to PE node
  • Data server to HUB : 100Mbps Ethernet x 32
  • Peak bandwidth 3.2Gbps/1.6Gbps = 50%
• Feature of this system
  • Requires very high performance SMP data server
  • I/O intensive job can be also done using the CPU's of the SMP server instead of using massive PE
  • In case of trouble of massive PE , all system still works correctly using the CPU's of SMP data server