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

3–2 Enterprise Volume Manager (Multi-OS) Network Administration Guide
Planning a New EVM Network
EVM Host Licenses
The EVM kit contains one EVM server license and a license for five EVM hosts. If
your planned EVM network includes more than five EVM-enabled hosts, you will
need to purchase a license for additional hosts. Host licenses are available in quantities
of 5, 10, or 25 hosts.
VCS Snapshot Licenses
If your planned EVM network includes HSV-based storage systems, you must have a
VCS snapshot license for each. EVM cannot access an HSV-based storage system
unless the storage system has a VCS snapshot license.
Storage Systems Planning
An EVM network must include at least one storage system and can include many
storage systems. However, for the best overall performance, an EVM network should
include only storage systems that you intend to include in EVM jobs.
If your SAN configuration (and planned EVM network) must include storage systems
that you do not intend to use with EVM, you can browse to the EVM Configuration
page and deselect them. This improves EVM performance but does not limit their use
outside of EVM.
Before installing EVM, ensure the following are addressed. For specific requirements
and versions, see Chapter 5, “Configuring the EVM Network.”
HSG-based Storage Systems
• You have identified the HSG-based storage systems that you want to use in the
EVM network, if any.
• The number of storage systems does not exceed the number that the Management
Appliance supports.
• Each HSG-based storage system is controlled by an element manager (and not by
a StorageWorks Command Console agent).
• Each HSG-based storage system has an EVM supported ACS and is configured
for multibus failover.