Today, Cisco released
the seventh annual Cisco
Global Cloud Index (2016-2021). The updated report focuses on data center virtualization and
cloud computing, which have become fundamental elements in transforming how
many business and consumer network services are delivered.
According to the
study, both consumer and business applications are contributing to the growing
dominance of cloud services over the Internet. For consumers, streaming video,
social networking, and Internet search are among the most popular cloud
applications. For business users, enterprise resource planning (ERP),
collaboration, analytics, and other digital enterprise applications represent
leading growth areas.
Strong Multicloud
Traffic Growth Projected
Driven by surging
cloud applications, data center traffic is growing fast. The study forecasts
global cloud data center traffic to reach 19.5 zettabytes (ZB) per year by
2021, up from 6.0 ZB per year in 2016 (3.3-fold growth or a 27 percent compound
annual growth rate [CAGR] from 2016 to 2021). Globally, cloud data center
traffic will represent 95 percent of total data center traffic by 2021,
compared to 88 percent in 2016.
Improved Security and
IoT Fuel Cloud Growth
In the past, security
concerns have been a major barrier to cloud adoption. Improvements in data
center governance and data control have helped to minimize enterprise risk and
better protect consumer information. Security innovations coupled with tangible
cloud computing benefits, including scalability and economies of scale, play
key roles in fueling the cloud growth projected in the study. Additionally, the
growth of Internet of Things (IoT) applications such as smart cars, smart
cities, connected health and digital utilities requires scalable computing and
storage solutions to accommodate new and expanding data center demands. By
2021, Cisco expects IoT connections to reach 13.7 billion, up from 5.8 billion
in 2016.
Hyperscale Data
Centers Doubling
The increasing need for data center and cloud
resources has led to the development of large-scale public cloud data centers
called hyperscale data centers. In this year’s forecast, it is expected that by
2021 there will be 628 hyperscale data centers globally, compared to 338 in
2016, 1.9-fold growth or near doubling over the forecast period. By 2021,
hyperscale data centers will support:
· 53 percent of all data center servers (27 percent in 2016)
· 69 percent of all data center processing power (41 percent in
2016)
· 65 percent of all data stored in data centers (51 percent in 2016)
· 55 percent of all data center traffic (39 percent in 2016)
“Data center
application growth is clearly exploding in this new multicloud world. This
projected growth will require new innovations especially in the areas of
public, private and hybrid clouds,” said Kip Compton, Vice President of Cisco's Cloud Platform and Solutions
Group.
Global Cloud Index
Highlights and Key Projections:
1. Data center virtualization and cloud computing growth
· By 2021, 94 percent of workloads and compute instances will be
processed by cloud data centers; 6 percent will be processed by traditional
data centers.
· Overall data center workloads and compute instances will more
than double (2.3-fold) from 2016 to 2021; however, cloud workloads and compute
instances will nearly triple (2.7-fold) over the same period.
· The workload and compute instance density for cloud data centers
was 8.8 in 2016 and will grow to 13.2 by 2021. Comparatively, for traditional
data centers, workload and compute instance density was 2.4 in 2016 and will
grow to 3.8 by 2021.
2. Growth in stored data fueled by big data and IoT
· Globally, the data stored in data centers will nearly quintuple
by 2021 to reach 1.3 ZB by 2021, up 4.6-fold (a CAGR of 36%) from 286 EB in
2016.
· Big data will reach 403 exabytes (EB) by 2021, up almost 8-fold
from 25 EB in 2016. Big data will represent 30 percent of data stored in data
centers by 2021, up from 18 percent in 2016.
· The amount of data stored on devices will be 4.5 times higher
than data stored in data centers, at 5.9 ZB by 2021.
· Driven largely by IoT, the total amount of data created (and not
necessarily stored) by any device will reach 847 ZB per year by 2021, up from
218 ZB per year in 2016. Data created is two orders of magnitude higher than
data stored.
3. Applications contribute to rise of global data center traffic
· By 2021, big data will account for 20 percent (2.5 ZB annual,
209 EB monthly) of traffic within data centers, compared to 12 percent (593 EB
annual, 49 EB monthly) in 2016.
· By 2021, video streaming will account for 10 percent of traffic
within data centers, compared to 9 percent in 2016.
· By 2021, video will account for 85 percent of traffic from data
centers to end users, compared to 78 percent in 2016.
· By 2021, search will account for 20 percent of traffic within
data centers by 2021, compared to 28 percent in 2016.
· By 2021, social networking will account for 22 percent of
traffic within data centers, compared to 20 percent in 2016.
4. SaaS most popular cloud service model through 2021
· By 2021, 75 percent (402 million) of the total cloud workloads
and compute instances will be SaaS workloads and compute instances, up from 71
percent (141 million) in 2016. (23% CAGR from 2016 to 2021).
· By 2021, 16 percent (85 million) of the total cloud workloads
and compute instances will be IaaS workloads and compute instances, down from
21 percent (42 million) in 2016. (15% CAGR from 2016 to 2021).
· By 2021, 9 percent (46 million) of the total cloud workloads and
compute instances will be PaaS workloads and compute instances, up from 8% (16
million) in 2016. (23% CAGR from 2016 to 2021).
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