Correction -- 2 hours to read the whole disk.
1. It won't make a load take 12 hours unless we're talking a load that is in > total, similar to the size of the disk. A slow, newer SATA drive will read > and write at at ~50MB/sec at minimum, so the whole 320GB can be scanned at > 3GB per minute. Thats ~ 5 hours. It is not likely that 20M records is over > 20GB, and at that size there is no way the disk is the bottleneck. >
