Data centre owners and operators face increasing complexity and operational challenges as they look to improve IT resiliency, build out capacity at the edge, and retain skilled staff in a tight labour market.
Meanwhile, use of the public cloud for mission-critical workloads is up, according to Uptime Institute, even as many enterprises seek greater transparency into cloud providers’ operations. These are some of the highlights of this year’s Global Data Center Survey, which tracks trends in capacity growth, capital spending, tech adoption, and staffing.
1 - Fewer data centre outages, higher costs
In its annual survey, Uptime looks at the number and seriousness of outages over a three-year period. In terms of overall outage numbers, 69 per cent of owners and operators surveyed in 2021 had some sort of outage in the past three years, a fall from 78 per cent in 2020.
Uptime notes that the improvement in the number of outages could be traced to operational changes driven by the pandemic.
"The recent improvement may be partially attributed to the impact of COVID-19, which, despite expectations, led to fewer major data centre outages in 2020. This was likely due to reduced enterprise data centre activity, fewer people on-site, fewer upgrades, and reduced workload/traffic levels in many organisations -- coupled with an increase in cloud/public internet-based application use,” Uptime reports.
In terms of seriousness of outages, roughly half of all data centre outages cause significant revenue, time, and reputational damage, according to Uptime. In this year’s report, 20 per cent of outages were deemed severe or serious by the organisations that reported them. Roughly six in 10 major outages in the 2021 survey cost more than US$100,000.
Power remains the leading cause of major outages, responsible for 43 per cent of outages in 2021, followed by network issues (14 per cent) cooling failures (14 per cent), and software/IT systems error (14 per cent).
2 - More mission-critical workloads in the cloud
Data centre owners and operators are increasingly moving mission-critical workloads to a public cloud, Uptime finds, although visibility issues persist for some cloud users and would-be users.
When asked if they place mission-critical workloads into public clouds, 33 per cent of respondents said yes (up from 26 per cent in 2019) and 67 per cent said no (down from 74 per cent).
The “yes” respondents were split between those that say they have adequate visibility into the operational resiliency of the service (18 per cent of all respondents), and those that don’t think they have adequate visibility (15 per cent).
The “no” respondents were also divided: 24 per cent said they would be more likely to put mission-critical workloads into public clouds if there was a higher level of visibility into the operational resiliency of the service, while 43 per cent said they don't place mission-critical workloads into public clouds and have no plans to do so.
“Cloud companies are beginning to respond to the requirement for better visibility as part of their efforts to win over more large commercial customers. This trend toward improved access and auditability, still in its early days, will likely accelerate in the years to come, as competition and compliance requirements increase,” Uptime says.
Despite concerns about visibility and operational transparency, 61 per cent of respondents that have their workloads spread across on-premises, cloud and colocation sites believe that distributing their workloads across these venues has increased their resiliency. Just nine per cent think their organisation has become less resilient using these architectures. 30 per cent said they don’t know.
3 - Public-cloud repatriation not happening for most enterprises
What goes in the cloud tends to stay in the cloud, Uptime’s research shows.
When asked if they had repatriated any workloads or data from a public cloud to a private cloud or private on-premises / colocation environment, nearly 70 per cent said no. Among the 32 per cent of respondents who said yes, the most common primary reason for repatriation was cost, followed by regulatory compliance.
Other reasons included performance issues and perceived concerns over security. Actual security breaches were responsible for just one per cent of repatriated workloads, according to Uptime.
“When organisations deploy in a public cloud, their workloads typically remain there, despite speculation about an imminent wave of cloud repatriation,” Uptime concludes.
4 - Edge expansion continues
Most respondents expect to see demand for edge computing increase in 2021: 35 per cent of respondents said they expect edge-computing demand to somewhat increase, and another 26 per cent expect demand to significantly increase.
Looking ahead, the largest percentage of respondents (40 per cent) expect to use mostly their own private edge data centre facilities for the coming build-up, followed by 18 per cent who expect to use a mix of private and colocation. The remainder plan to rely mostly on colocation (seven per cent), outsourcing (three per cent), or public cloud (two per cent).
Uptimes notes those plans may change over time: “Yet it is still early days for this next generation of edge buildout, and expectations are likely to change as more edge workloads are deployed.
"Shared facilities may well play a larger role as demand grows over time. In addition to improved business flexibility and low capital investment, the benefits of shared edge sites will include reduced complexity compared with managing multiple, geographically dispersed sites.”
5 - Staffing problems persist
The struggle to attract and retain staff is an ongoing problem for many data centre owners and operators. Among respondents, 47 per cent report difficulty finding qualified candidates for open jobs, and 32 per cent say their employees are being hired away, often by competitors.
In the big picture, Uptime projects that staff requirements will grow globally from about two million full-time employee equivalents in 2019 to nearly 2.3 million in 2025.
According to Uptime: “New staff will be needed in all job roles and across all geographic regions. In the mature data centre markets of North America and Europe, there is an additional threat of an aging workforce, with many experienced professionals set to retire around the same time -- leaving more unfilled jobs, as well as a shortfall of experience. An industry-wide drive to attract more staff, with more diversity, has yet to bring widespread change.”
6 - Data centre environmental practices lag
The notion of sustainability is growing in importance in the data centre sector, but most organisations don’t closely track their environmental footprint, Uptime finds.
Survey respondents were asked which IT or data centre metrics they compile and report for corporate sustainability purposes. Power consumption is the top sustainability metric tracked, cited by 82 per cent of respondents. Power usage effectiveness (PUE), a metric used to define data centre efficiency, is close behind, tracked by 70 per cent of respondents.
Many data centres consume large volumes of water, Uptime says, but only about half of owners and operators track water use. Even fewer respondents said they track server utilisation (40 per cent), IT or data centre carbon emissions (33 per cent) and e-waste or equipment lifecycle (25 per cent).
"It is still common at smaller and privately-owned enterprise data centres that the electric utility bill is paid by property management, which may have little interest or say in how the compute infrastructure is built or operated," Uptime reports.
"This disconnect could explain why most still do not track server utilisation, arguably the most important factor in overall digital infrastructure efficiency. Even fewer operators track emissions or the disposal of end-of-life equipment, which underscores the data centre sector’s overall immaturity in adopting comprehensive sustainability practices."