Dell X4240 with dual quad core opteron 2384 (2700Mhz), 64GB memory, 6TB disk space in RAID-5, I believe 10000RPM drives. Oracle partitions are set by week, then subpartitioned by hierarchical triangular mesh region (http://www.skyserver.org/htm/), and our data is inherently anisotropic. Block size is 4kb I believe.