Plan For Disaster Tolerance; Installing A Secondary Appliance - Omron Enterprise Manager 2100 User Manual

3.6 Plan for Disaster Tolerance
1. Connect the AC plug on the rear of the appliance to AC power.
2. Set the rear power switch to ON (I).
3. Use only the front momentary power switch to control AC power during normal oper-
ation.

3.6 Plan for Disaster Tolerance

Installing a Secondary appliance in a remote location (you must meet all networking require-
ments) might enable your fleet to tolerate some potential disaster events. A catastrophic local
event that affects the Primary Appliance might not affect the Secondary. When a Secondary
appliance is available and running, you can quickly recover your AIV fleet operations.
A Secondary appliance is one that is ready to take over operation if the Primary appliance
fails. You can install a Secondary appliance as a standby for the Primary. Consider additional
planning for disaster tolerance by including UPS, redundant power, and redundant network
switching. Such device and power redundancy will help you to recover more quickly with
little or no data loss.
IMPORTANT: If you have an EM2100 and an EM1100, you must always use
the EM1100 as a Secondary appliance. See Supported Enterprise Manager 2100
Deployments on page 14.
If you install a Secondary appliance, follow the hardware procedure described for the Primary
appliance. While you can choose to install a Secondary appliance in the same rack as the
Primary appliance, connect it to a different UPS and also to a different network switch.
Connect a Secondary appliance to the same network subnet as the primary and consider the
following options for a reliable and trouble-free operation:
Install the Secondary appliance in a different (remote) location in the building.
l
Connect each appliance to a separate power circuits and UPS.
l
Connect each appliance to separate, interconnected Ethernet switches.
l
Connect each Ethernet switch to separate power circuits and UPS.
l

3.7 Installing a Secondary Appliance

If you are installing a Secondary appliance to create an Autosync pair, follow the procedure
described for the Primary appliance. While you can install a Secondary appliance in the same
rack as the Primary appliance, you should always connect it to a different UPS and also to a
different network switch.
Installing the Secondary appliance in a remote location (providing you meet all networking
requirements) is a better solution for redundancy. A catastrophic local event that affects the
Primary appliance will not affect the Secondary. If the Secondary appliance is available and
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AVERTISSMANT: RISQUE D'ÉLECTROCUTION. S'assurer que toutes les
connexions et les équipements d'alimentation sont sûrs du point de vue opéra-
tionnel et respecter toutes les réglementations locales concernant l'installation
électrique des dispositifs informatiques.
Enterprise Manager 2100 User's Guide 14413-200 Rev. A