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

10–2 Enterprise Volume Manager (Multi-OS) Network Administration Guide
Adding or Removing a Host Computer
Effects of Stopping EVM Activities
Stopping EVM on a host computer or the Management Appliance affects the EVM
network and EVM jobs. So consider the following when planning to remove EVM
from a host computer:
• Stopping the Management Appliance stops any EVM job running in the EVM
network.
• Stopping the Management Appliance stops all browser access to the EVM
network.
• Stopping an EVM host agent service or daemon stops any EVM job involving the
EVM host agent computer.
Impacts on Affected EVM Jobs and Undo Jobs
Removing a host computer from an EVM network can negatively affect EVM jobs.
Consider the following with respect to removing a computer:
• Before removing the EVM host agent from a host computer, run all pending EVM
undo jobs that require the computer, as desired.
• Do not remove a host computer that is required in an EVM job. Removing a host
computer required for an EVM job makes that job unusable.
• Do not replace the Management Appliance while EVM jobs are pending. EVM
job files are stored on the Management Appliance. Replacing the Management
Appliance removes the EVM job files for the entire EVM network.
IMPORTANT: HP recommends periodically backing up EVM job files onto a host computer
within the EVM network. See Chapter 5, beginning on page 5–24, for more information
about saving and reloading an EVM network configuration.
CAUTION: Running an undo job unmounts the job BCV units and deletes the BCV
data. Coordinate this activity with other operations and users that may be affected.