1.2. Definitions and Terminology

Term Abbreviation Definition
Best Effort - Burstable connectivity up to the selected bandwidth.
Compute Class - A classification to represent performance of CPU and Memory.
Compute Resource - A service to provide virtual resource in combination of CPU, Memory and Storage necessary to create virtual servers.
Compute Resource Pool CRP Comprises an amount of CPU, Memory and Storage resources provisioned from Enterprise Cloud Infrastructure. These resources are then allocated to Virtual Machine set up within Compute Resource Pool.
CPU - A component in a computer which helps executing IT programs. Central processing unit.
Customer - Any legal entity including any individual, corporation or unincorporated body, which is interested in requesting / has requested NTT Com Group to provide Enterprise Cloud, details of whom will be set out in the applicable Service Order.
Customer Portal CP Enterprise Cloud web portal, which allows Customer to manage their resource in Enterprise Cloud.
Data Center DC A facility used to house computer systems and associated components such as telecommunications, servers and Storage systems.
Dedicated Device - Facilities (physical server and Storage device) used for Enterprise Cloud to provide Compute Resource dedicated for a Customer.
Enterprise Cloud - An enterprise grade infrastructure as a service provided by NTT Com Group via the Internet to Customer. The platform is orchestrated via software, and comprises of servers, Storage and network elements coupled with Virtualization Technology and operating system software.
Enterprise Cloud Infrastructure - A set of tangible resources (machine room, cabling, power, UPS, etc.), hardware resources (server racks, physical servers) and Software resources (operating system and Software components) deployed by NTT Com Group to supply Enterprise Cloud.
Global File Storage - A service to provide an external Storage area for storing backup data. The Storage area can be in the same Data Center or a remote Data Center.
Global IP Address - Public routable IPv4 Internet addresses.
Guaranteed - A plan that is designed to guarantee the available bandwidth for the customer.
Hypervisor - A piece of computer software program that creates and runs Virtual Machine.
Image Backup - A solution for backing up a Virtual Machine. Customer can select frequency and retention period for their backup.
Integrated Network Appliance INA A virtual appliance which has basic security & networking functions required for the cloud environment managed by the Customer.
Internet Connectivity - A service that allows Customer to connect Internet to Enterprise Cloud Infrastructure by utilizing Internet Gateway and Internet Transit.
Internet Gateway - A gateway device to connect to the Internet.
Internet Transit - A device to provide connection between the Internet Gateway and vFirewall.
Memory - A Memory that is required to run OS and/or applications by CPU, and a component of Virtual Machine.
NTT Com Group - NTT Communications and/or any of its subsidiaries, related corporation (existing and future) who provide Enterprise Cloud to Customer.
On-Premises Interconnectivity OPIC A service that allows Customer to connect on-premises system and Enterprise Cloud in the same network segment using SDN-compatible gateway equipment installed in the Customer’s system.
Private Catalog - A disk space for storing Customers’ own Virtual Machine Template that is available only to the Customer.
Public Catalog - A disk space for storing Template pre-registered by NTT Com Group that is available to all Customer.
Server Segment - The secure logical network partition that Customer can order and configure to connect to its Virtual Machines, vLoad Balancers, vFirewalls, Service Interconnect Gateway, and On-Premises Interconnectivity.
Service Interconnectivity - A service that allows Customer to connect services that requires Service Interconnect Gateway such as collocation, Global File Storage to Enterprise Cloud.
Service Interconnect Gateway SIG A device that allows Customer to connect services such as collocation, Global File Storage to Enterprise Cloud.
Shared Device - A facilities (physical server and Storage device) used for Enterprise Cloud to provide Compute Resource for more than one Customer.
Storage - An area where Customer can store their data.
Storage Class - A classification to represent performance of Storage.
Template -
A copy of root disk/data disk as an image of Virtual Machine.
Private Template is the Template created by Customer on Private Catalog using Customer Portal or Image Backup, which is available only to the Customer.
Public Template is the Template provided by NTT Com Group on Public Catalog, which is available to all Customers.
vApp - A container for Virtual Machines managed by VMware.
vCPU - A virtual CPU hardware constituting a Virtual Machine. You can allocate more than one vCPU to a Virtual Machine. (vCPU stands for “virtual CPU”)
vFirewall vFW A virtual appliance that employs mainstream security technology that has been optimized for virtual environments and that Customer is able to manage. (vFirewall stands for “virtual Firewall”)
Virtual Machine VM A software implemented abstraction of the underlying hardware, which is presented to the application layer of the system. Virtual Machines may be based on specifications of a hypothetical computer or emulate the computer architecture and functions of a real world computer.
Virtual Private Data Center VPDC A virtual environment of physical Data Center that allows control over Customer’s Enterprise Cloud. A Virtual Private Data Center contains one or more Virtual Rooms.
Virtual Room - An underlying virtual environment of Virtual Private Data Center that allocates resources to Customer. Within a Virtual Room Customer can create and manage Compute Resource Pools, vLoad Balancers and vFirewalls.
Virtualization Technology - A computing technology of simulating Compute Resource such as a hardware platform, operating system, Storage device, or network resources.
vLoad Balancer vLB A virtual appliance that allows the implementation of load balancing mechanism between Virtual Machines by setting up a load balancing module. (vLoad Balancer stands for “virtual Load Balancer”)
VPN - An extension of local networks, which preserve the logical security to Enterprise Cloud within a local network. It is the interconnection of local networks via a tunneling technic.
VPN Connectivity - A service that allows Customer to connect NTT Com Group IP-VPN service (Arcstar Universal One) to the Enterprise Cloud Infrastructure by utilizing VPN Gateway and VPN Transit.
VPN Gateway - A device to connect to NTT Com VPN service (Arcstar Universal One) to Enterprise Cloud.
VPN Transit - A connection between the VPN Gateway and vFirewall.