System Requirements
An ACSLS HA server configuration consists of two identical Linux server nodes sharing an external NFS file system. During configuration, ACSLS HA utilizes the same operating system device name on each server. Therefore, any network interface cards installed in the servers must be identical.
Client Options
ACSLS HA supports all ACSLS clients that use the Automated Cartridge System Application Programming Interface (ACSAPI) network interface. A single network IP address is shared between the two server nodes, allowing ACSAPI clients to address ACSLS using a common virtual host ID.
Server Options
ACSLS HA 8.5.1 can run on any system that meets the minimum hardware requirements for Linux 7.3, 7.6, or 7.8.
Systems generally include four Ethernet ports on the motherboard. Additional network interface cards are required in order to accommodate a total of eight Ethernet ports per server. Best practice dictates that the two servers and the external ethernet cards are identical. The naming conventions used in this document for network ports, bond names and NFS assumes these best practices.
NFS Options
Any network file system server is valid provided that its NFS4 options are set according to the installation instructions in this guide. NFS version 4 must be utilized.
The ACSLS Installation Guide instructs you to create users and groups on the ACSLSA server. You must also create these users and groups on the NFS server.
Network Requirements
- One Logical Host IP address
- Two NFS IP addresses
- Two Library IP addresses
- Two Node Interconnect IP addresses
Ideally, library interfaces reside on different subnets and attach to separate Host Library Interface cards. Best practice dictates that the ethernet cards installed in both systems be identical.