G-Cloud is the Infrastructure as a Service (IaaS), based on cloud computing and virtualization technologies.
The newly built G-Cloud Data meets very exacting, very strict international operating and security standards, in line with the Uptime Institute’s Tier III standard. All E/M infrastructure comes with double power and cooling supplies ensuring 99.982 % availability (which translates into less than 1.6 hours of down time a year).
The G-Cloud Data Center’s key features are:
Useful power supply - 1,000 kW, installed capacity 2 x 2,500 kVA - All systems on a double loop
Cooling system (output of 3 x 500kW) with water-based A/C units in a row
Automatic fire detection and suppression system (VESDA)
Guaranteed secure physical access environment
Free cooling technology to ensure the rational energy management, usage and savings.
G-Cloud’s IT infrastructure (servers, storage, RAM, network, security) has also been designed to ensure uninterrupted operation, thereby creating an efficient, easy-to-manage, stable and secure environment. Availability is around 99.75% and security measures are implemented in line with the ISO 27001:2013 security standard.
The main features are:
11,000 virtual cores / 2,780 physical cores
35ΤB of RAM for the servers
325TB of storage space (there are plans to increase capacity by another 325TB)
VMware ESXi 6.0 (vSphere Enterprise Plus) virtualization software employed
What's provided ‘as a Service’
1. Infrastructure as a Service (IaaS)
This relates to the use of virtual machines and web resources as a service via the internet. This can serve all existing IT systems currently in operation, irrespective of computing resource requirements, and all new critical government high-spec IT systems which are designed from here on in.
2. Software as a Service (SaaS)
This entails providing specific software suites via the G-Cloud as value-added services to public agencies online such as: User request handling systems, software and hardware license monitoring (asset management) systems, infrastructure and application availability and productivity monitoring (SLA management) systems, management information systems (MIS) and business intelligence (BI) systems.
3. Platform as a Service (PaaS) (to be offered in the future)
This entails providing virtual machines and network resources and the necessary infrastructure software (such as operating systems, database servers, application servers, etc.) as a service online so that agencies involved can run those applications. At present this service is not offered by G-Cloud but there are plans to release it in the future.