|
Device |
Description |
|
|
External subnet - Represents the Internet connection. Grid Operations assigns the IP addresses during activation. All IP addresses allocated are visible externally on the Internet. The maximum number of IP addresses per Internet connection is 1024. Devices on the external subnet will have access to devices on the Internet. |
|
|
|
|
|
Subnet/Network Connection - Represents a virtual local area network (VLAN) within the infrastructure. Grid Operations assigns the IP addresses during activation. All IP addresses allocated are visible internally only. The default size is 1024 IP addresses per subnet. If you need more than 1024 IP addresses on a subnet, the Grid Operator must restart all devices on that subnet to initialize the additional addresses. |
|
|
|
|
|
Firewall - Represents a firewall. The firewall has three ports, or interfaces:The upper port (eth0) is the outside interface. The lower left port (eth1) is the inside interface. The lower right port (eth2) is the DMZ (demilitarized) interface. |
|
|
|
|
|
Load Balancer - Represents a load balancer, which balances traffic sent to a “virtual” interface and sends it to a real interface to spread traffic over multiple servers. The load balancer has two ports; the upper port (eth0) is the virtual interface and the lower port (eth1) is the real interface. The load balancer can load balance anything with an IP address, including servers/tiers, firewalls, real and virtual interfaces of other load balancers, and backhaul circuits. When a load balancer balances an element, the element displays a small “B” icon in the lower right hand corner of the icon. |
|
|
|
|
|
General Purpose Server - Represents a server or a server group (tier) of up to 8 servers. There is no distinction between a single server and a tier of servers. A server has two ports; the upper interface (eth0) is incoming and the lower interface (eth1) is outgoing. Disk 0 is the boot volume. Its size is fixed at 9GB and it can only run images that are 9GB in size. You can add up to six local storage disks (1-6) to the server. The disk size can be a minimum of 9GB and a maximum of 1TB (1024 GB), with increments of 9GB. The size of the image that runs on the disk must match the size of the disk. The server type must match its boot image, for example, a Sun Solaris server cannot run an x86 image. |
|
|
|
|
|
Multiple Server Tier, also called a Server Group - represented by a taller version of the Server icon. The circled number on the front of the icon indicates the number of servers in the group. See the description for General Purpose Server for more details. |
|
|
|
|
|
Backhaul - Represents a backhaul connection to the customer site. A backhaul is a VPN, point-to-point, POTS (plain old telephone service), or some other connection to an outside resource. A backhaul has only one port (eth0), and a connection to it is required. Note that backhaul access requires a change to the contract and that the Customer Care Representative works with a service provider to set up backhaul. |
