It relied on punched CARDS and paper tape but also used inexpensive disk storage (1mb total).

RAID Redundant Array of Inexpensive Disks, groups many disk drivers in a storage unit to perform parallel data transfer and offer fault-tolerant.

Rather than consigning an old computer to the e-waste scrap heap, give it a new, inexpensive hard disk—or just boot from a CD or a USB flash drive (UFD)—and re-purpose the computer as a thin client.