ESC consists of the following programs: ESC Manager, ESC Agent, and ESC Client.
This guide refers to devices on which respective programs were installed as the administrative server, the server node, and the administrative client. These programs can be installed on a single device and operated as well. In that manner, there is no restriction on the order of installation of these programs.
ESC Manager (administrative server) is the central management part of ESC that obtains and sets information about devices involved in the storage system on the LAN. Important data among those used for controls are stored in the database.
ESC Agent (server node) controls information about home software such as an HBA and a multipath driver on the server node using the storage and communicates with ESC Manager. When there are several server nodes, it must be installed on each of them.
ESC Client functions as the ESC GUI (screen control part) used to connect to ESC Manager. Multiple clients can be connected to the same ESC Manager at the same time.
Figure 1.1 ESC Configuration
