An `Iceberg' Is Bearing Down On Ibm's Disk Business

Sometimes many small pieces can do a job better than one large item. Some of the fastest supercomputers, for example, are now built from hundreds or even thousands of microprocessors, rather than a single large processor. Likewise, in data storage, refrigerator-size disk drives with platters measuring 14 inches across are giving way to scores of 3 1/2- or 5 1/4-inch disk drives. Together, these "redundant arrays of inexpensive disks," or RAID, can outperform large disks.

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