The ability of cloud architectures to scale rapidly and efficiently support more workloads than traditional data centres is enticing more organizations to move their workloads to the cloud, the company said.
Software-defined networking (SDN) and network functions virtualization (NFV) are helping to flatten data centre architectures and streamline traffic flows. Over the next five years, nearly 60 per cent of global hyperscale data centres is expected to deploy SDN/NFV solutions. By 2020, 44 per cent of traffic within data centres will be supported by SDN/NFV platforms (up from 23 per cent in 2015) as operators strive for greater efficiencies.
“In the six years of this study, cloud computing has advanced from an emerging technology to an essential scalable and flexible part of the architecture for service providers of all types around the globe,” said Doug Webster, vice president of service provider marketing, Cisco. “Powered by video, IoT, SDN/NFV and more, we forecast this significant cloud migration and the increased amount of network traffic generated as a result to continue at a rapid rate as operators streamline infrastructures to help them more profitably deliver IP-based services businesses and consumers alike.”
The company’s the sixth annual Cisco Global Cloud Index (2015-2020):
Business workloads dominate data centre applications and are growing
- Business workloads will grow by 2.4 fold from 2015 to 2020 but their overall share of data centre workloads will decrease from 79 to 72 per cent.
Consumer workloads, while smaller in number, are growing faster
- During the same time, consumer workloads will grow faster by 3.5 fold
- By 2020, consumer workloads will account for 28 per cent (134.3 million) of total data centre workloads, compared to 21 per cent (38.6 million) in 2015
IoT/analytics/database workloads are growing the most in terms of share of business workloads with collaboration and compute workloads largely maintaining their share
- By 2020, database/analytics/Internet of Things (IoT) workloads will account for 22 per cent of total business workloads, compared to 20 per cent in 2015
Video and social networking will lead the increase in consumer workloads
- By 2020: video streaming workloads will account for 34 per cent of total consumer workloads, compared to 29 per cent in 2015
- Social networking workloads will account for 24 per cent of total consumer workloads, compared to 20 per cent in 2015
- Search workloads will account for 15 per cent of total consumer workloads, compared to 17 per cent in 2015
Hyperscape data centres will also grow from 259 in 2015 to 485 by 2020, according to Cisco.
“These infrastructures will account for 47 per cent of total data centre installed servers and support 53 per cent of all data centre traffic by 2020,” the report said.
Other key findings include:
1. With cloud comes networking traffic.
- By 2020, cloud data center traffic will reach 14.1 ZB per year, up from 3.9 ZB per year in 2015. A zettabyte is one trillion gigabytes
- By 2020, traditional data centre traffic will reach 1.3 ZB per year, up from 827 exabytes (EB) per year in 2015
2. Cloud dominates growth and outpaces traditional data centre growth by 2020
- By 2020, 92 per cent of workloads will be processed by cloud data centres; 8 per cent will be processed by traditional data centres
- Workload density (workloads per physical server) for cloud data centres was 7.3 in 2015 and will grow to 11.9 by 2020. Comparatively, for traditional data centres, workload density was 2.2 in 2015 and will grow modestly to 3.5 by 2020
3. Public cloud is growing faster than private cloud growth
- By 2020, 68 per cent (298 million) of the cloud workloads will be in public cloud data centres, up from 49 per cent (66.3 million) in 2015 (35 per cent CAGR 2015-2020)
- By 2020, 32 per cent (142 million) of the cloud workloads will be in private cloud data centres, down from 51 per cent (69.7 million) in 2015 (15 per cent CAGR 2015-2020)
4. More consumers will turn to the cloud for storage
- By 2020, 59 per cent (2.3 billion users) of the consumer Internet population will use personal cloud storage up from 47 per cent (1.3 billion users) in 2015
- By 2020, consumer cloud storage traffic per user will be 1.7 GB per month, compared to 513 MB per month in 2015
5. Data centre storage capacity is increasing to accommodate the migration of consumer data from devices to the cloud
- By 2020, data centre storage installed capacity will grow to 1.8 ZB up from 382 EB in 2015, nearly a 5-fold growth
- By 2020, the total global installed data storage capacity in cloud data centres will account for 88 per cent share of total DC storage capacity up from 64.9 per cent in 2015
6. Big data will drive overall growth in stored data
- Globally, the data stored in data centres will quintuple by 2020 to reach 915 EB by 2020, up 5.3-fold (a CAGR of 40 per cent) from 171 EB in 2015
- Big data will reach 247 EB by 2020, up almost 10-fold from 25 EB in 2015. Big data alone will represent 27 per cent of data stored in data centres by 2020, up from 15 per cent in 2015
7. IoT will be a massive data generator
- Globally, data generated (but not necessarily stored) by IoT will reach 600 ZB per year by 2020, 275 times higher than projected traffic going from data centres to end users/devices (2.2 ZB); 39 times higher than total projected data centre traffic (15.3 ZB).
8. There is significant opportunity for even more growth as more device data goes online
- The amount of data stored on devices (5.3 ZB) will be 5 times higher than data stored in data centres by 2020
9. Improvements in global networks will increase propensity to use cloud applications
Global Cloud Readiness Advancements (Fixed and Mobile Networks):
- In 2016, 132 countries met the single advanced 2 application criteria for fixed networks; up from 119 countries in 2015
- In 2016, 89 countries met the single advanced application criteria for mobile networks; up from 81 countries in 2015
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