Global Mailbox components at a glance
A Global Mailbox system includes various components that operate together.
| Global Mailbox components | Description | Required or optional | Operating system |
|---|---|---|---|
| Sterling B2B Integrator (application) | Processes the Global Mailbox messages. | Required | Windows, UNIX, AIX, or Linux® |
| Global Mailbox Management node | Manages the Global Mailbox data. | Required. Must be co-located with Sterling B2B Integrator. | Windows, UNIX, or Linux |
| Global load balancer | Distributes work load across data centers. | Required | Not applicable |
| Local load balancer | Distributes work load within a data center. | Required | Not applicable |
| Apache ZooKeeper | Creates distributed locks and coordinates actions across all Global Mailbox nodes. | Required | Linux |
| Apache Cassandra | Stores and replicates metadata across the servers in the Cassandra cluster in all the data centers. | Required | Linux |
| Cassandra Reaper | Used to schedule automatic repairs for the data in Cassandra. | Required | Linux |
| Shared file system, such as GPFS and NFS. | Stores payload data. | Required. Sterling B2B Integrator, Global Mailbox Management node, and replication server access the shared file system. | Windows, UNIX, or Linux |
| NFS Parameter actimeo |
You must use actimeo=0 on your NFS mount. If the parameter is not specified, file segments of 0 KB or incorrect size will be displayed. Downloading of large files (in GBs) from the replicated data center may also fail. | Required | Linux |
| Replication server | Replicates payloads from shared disk of one data center to the shared disk to another data center. | Required. Must be installed on each Sterling B2B Integrator and Global Mailbox Management node. | Windows, UNIX, or Linux |
| WebSphere® MQ | Notifies applications about the events related to the Global Mailbox. | Required | Windows, UNIX, or Linux |
| Database cluster | Stores the application configuration, such as users, business processes, and protocol adapters. | Required | Windows, UNIX, or Linux |
| Perimeter server | Reduces network congestion issues and improves scalability for high volume environments through session and thread management. Enhances security by moving security threats further from your secure network and data. | Optional | Windows, UNIX, or Linux |
| Sterling File Gateway | Facilitates the exchange of file-based information securely, in virtually any format, protocol, and file size. | Optional | |
| Sterling Secure Proxy | Masks the IP address and HTTP details of the servers to secure the network and data centers. | Optional | Windows, UNIX, or Linux |
Conceptual diagram
The following diagram shows the relative relationship between the components of Global Mailbox