ADC III : Key Numbers
Excellent system stability during 3 months (computers, Linux, network)
Ethernet-based network
- Tremendous aggregate throughput delivered by commodity equipment
- Assembly of Lego blocks providing performance on demand
HP SMP servers: cost-effective alternative to cheap disk servers
Stable and high performances:
- Max throughput in DATE: 550 MB/s (max) 350 MB/s (ALICE-like traffic)
- Max throughput in DATE+ROOT: 240 MB/s
- Max throughput in DATE+ROOT+CASTOR: 120 MB/s
average during several days: 85 MB/s (> 50 TB/week)
Total amount of data in the DAQ:
- 500 TB in DAQ, 200 TB in DAQ+ROOT I/O
- 2200 runs, 2*107 events, longest DATE run (86 hours, 54 TB)
Total amount of data over the complete chain (up to tape):
- CASTOR file system: > 100.000 files of 1 GB => 110 TB
- Database for metadata with 105 entries