Enterprise Volume Manager (Multi-OS) Version 2.0D Network Administration Guide

3–4 Enterprise Volume Manager (Multi-OS) Network Administration Guide
Planning a New EVM Network
EVM Host Computer Planning
An EVM network can include many EVM-enabled host computers. For a computer to
be EVM-enabled, you must install EVM host agent software on it.
In terms of EVM job operations, you need a computer to be EVM enabled to:
• Replicate storage volumes by specifying the host name.
• Suspend or resume host I/O (in conjunction with replication).
• Mount volumes on the host.
• Launch (start) an external job or issue a host command.
Selecting which computers are to be EVM enabled is largely a matter of reviewing
your operational needs. Typically, EVM host computers are database servers and tape
backup servers, although there is no EVM limitation on how a host is used.
Before installing EVM host agent software, ensure the following are addressed. For
specific requirements and versions, see Chapter 5, “Configuring the EVM Network.”
Host Operating System, FCA/HBA and LAN
• Each host is running an EVM supported operating system.
• Each host is connected to storage systems via EVM supported FCA/HBAs.
• Each host is on the same LAN as the Management Appliance (EVM server).
HSG or HSV Solution Software
• Each host is running EVM supported drivers from an HSG Solution Software kit.
• Or, the host is running EVM supported drivers from an HSV Operating System
kit.
Secure Path
• Each host is running an EVM supported version of StorageWorks Secure Path.
• Or, the host has EVM supported multipath support in the OS (for example, HP
Tru64 UNIX).