Why did Dell merge with EMC?

Could you please elaborate on the motivations behind Dell's decision to merge with EMC? What were the strategic advantages Dell sought to gain by acquiring EMC, and how did this acquisition align with Dell's long-term vision for growth and expansion in the technology industry? Was there a specific market opportunity or challenge that prompted Dell to seek out this merger? Additionally, how did the acquisition of EMC impact Dell's position in the market, and what were the potential risks and challenges associated with this merger?