Admittedly, it would have been a lot of drives. Back in circa 2000, according to http://www.mkomo.com/cost-per-gigabyte, 20 Gigabyte Drives were in vogue @$200/pop. So, a Terabyte would have been 50 drives, 10 Terabytes @500 Drives.

10s of terabytes at a minimum 1000 drives. I'm beginning to question how "simple" an operation this might have been after all....