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Cisco Systems. (February 1, 2018). Volume of big data in data center storage worldwide from 2015 to 2021 (in exabytes) [Graph]. In Statista. Retrieved May 12, 2021, from https://www.statista.com/statistics/638621/worldwide-data-center-storage-used-by-big-data/
Cisco Systems. "Volume of big data in data center storage worldwide from 2015 to 2021 (in exabytes)." Chart. February 1, 2018. Statista. Accessed May 12, 2021. https://www.statista.com/statistics/638621/worldwide-data-center-storage-used-by-big-data/
Cisco Systems. (2018). Volume of big data in data center storage worldwide from 2015 to 2021 (in exabytes). Statista. Statista Inc.. Accessed: May 12, 2021. https://www.statista.com/statistics/638621/worldwide-data-center-storage-used-by-big-data/
Cisco Systems. "Volume of Big Data in Data Center Storage Worldwide from 2015 to 2021 (in Exabytes)." Statista, Statista Inc., 1 Feb 2018, https://www.statista.com/statistics/638621/worldwide-data-center-storage-used-by-big-data/
Cisco Systems, Volume of big data in data center storage worldwide from 2015 to 2021 (in exabytes) Statista, https://www.statista.com/statistics/638621/worldwide-data-center-storage-used-by-big-data/ (last visited May 12, 2021)
