"Businesses shopping for rack servers have fewer vendors to choose from than in years past. Market consolidation and acquisition have left a rack server market dominated by the few.
Dell, HPE, IBM, and Lenovo account for 50% of all server revenue. Original Design Manufacturers (ODMs), which produce commodity white boxes, own another 25%.
Hence the top rack servers in this guide are predominantly from "the big four." However, models have been included from Cisco and Oracle, due to their obvious merits..."
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