1.6. Explanation of Common TermsΒΆ

This section explains common terms used in Enterprise Cloud.
Term Definition
Compute Resource A service that provides the virtual resources (CPU/Memory/Disk) to create Virtual Machines.
Compute Resource Pool (CRP) A resource management unit (pool) created in Compute Resource
Compute Class A name for distinguishing the performance of a CPU and Memory
Storage Class A name for distinguishing the performance of a Disk
Compute Resource (Dedicated Device) A service that provides virtual resources (CPU/Memory/Disk) using devices (physical server, storage devices) that are dedicated to the customer
Server Segment A service that provides an L2 segment for connecting multiple services to each other in Enterprise Cloud
Firewall A device for preventing penetration of Enterprise Cloud from the Internet
Load Balancer A virtual dedicated load balancer for allocating requests to multiple servers
Service Interconnectivity A service that provides interconnectivity between Enterprise Cloud and other services
VPN Connectivity A service that provides VPN Connectivity through an application connection service for customers of the Arcstar Universal One service (NTT Communications’ VPN service)
Gateway A device required to communicate by connecting networks together
VPN Gateway A device for connecting a VPN to Enterprise Cloud
VPN Transit A device for connecting between VPN Gateway and vFirewall
Internet Connectivity A service that provides Internet Connectivity for customers of Enterprise Cloud
Internet GW A device for connecting the internet to Enterprise Cloud
Internet Transit A device for connecting between the Internet GW and the vFirewall
Private Catalog A service that provides an area where customers can store their own templates for creating Virtual Machines
Global File Storage (Global Data Backup) A service that provides an External Storage area for storing backup data
On-Premises Environment Your operational system environment at your company
On-Premises Interconnectivity A service that provides a secure L2 connection between Server Segments in Enterprise Cloud and an On-Premises Environment, through the internet
Colocation Installation of your system at a Data Center
Colocation Interconnectivity A service that provides a secure L2 connection between the Server Segments in Enterprise Cloud and your system environment within NTT Communications Colocation, via our inter-Data Center network
On-Premises GW in a Data Center A device for connecting between an NTT Communications Data Center and the Internet for On-premises Connectivity
On-Premises GW in Your On-Premises Environment A device for connecting between your On-Premises Environment and the Internet, in order to establish On-premises Connectivity
IPS (Intrusion Prevention (Protection) System) A system for preventing intrusions
IDS (Intrusion Detection System) A system for detecting intrusions
Signature A list in which known attack patterns and malware patterns are converted into data
Policy Rules for detecting and interrupting communication
RPS (Requests Per Second)
The number of requests that are processed per second
* The numerical value when the server makes one connection (when using One Connect on the server side) for multiple connections to a client.
CPS (Connections Per Second)
The number of connections that are processed per second
* The numerical value when the server makes one connection for one connection to a client.
UTM/Unified Thread Management Integrate security function different in plural into one appliance and do network management intensively.
C&C Server (Command and Control Server) The server that sends commands and becomes the center of control for a computer infected with malware
PCR Policy Change Request(Customer can request policy change to NTT Communications)
Active Device A device that has priority of use
Standby Device A device that is used when there is an error on the active device
vApp A container for Virtual Machines managed by VMware.