Administrator Guide

Table Of Contents
4. Select a Live Volume.
5. Click Next.
6. Select the Storage Center where the Live Volume will be activated.
7. Click Next.
NOTE: A warning page appears if Storage Manager is managing only one of the Storage Centers.
8. Click Finish.
Modifying Live Volumes with Automatic Failover
The following tasks apply to Live Volumes with Automatic Failover.
Update to the Local Tiebreaker
Updating to the local tiebreaker configures the Data Collector that Storage Manager is connected to as the tiebreaker. Storage
Manager provides the option to update to the local tiebreaker when the current Data Collector is not configured as the
tiebreaker. If another Data Collector is configured as the tiebreaker, such as a Remote Data Collector, do not configure the
current Data Collector as the tiebreaker.
Steps
1. Click the Replications & Live Volumes view.
2. Click the Live Volumes tab then select a Live Volume.
3. Click Update to Local Tiebreaker.
The Update to Local Tiebreaker dialog box opens.
4. Select a Live Volume.
5. Click OK.
Enable Automatic Failover on a Live Volume
Enabling Automatic Failover allows the Live Volume to automatically failover to the secondary Live Volume after a failure.
Automatic Restore recreates the Live Volume relationship between the two Live Volumes. The active (previously secondary)
Live Volume will remain the in the primary role and the original primary Live Volume will become the secondary Live Volume.
Prerequisites
The Live Volume must be configured as synchronous and high-availability.
Both primary and secondary Storage Centers must be managed by Storage Manager.
Steps
1. Click the Replications & Live Volumes view.
2. Click the Live Volumes tab.
3. Select a Live Volume then click Edit Settings. The Edit Live Volume dialog box opens.
4. Select the Failover Automatically check box.
5. To enable automatic restore, select the Restore Automatically check box.
6. Click OK.
Live Volume ALUA
Asymmetric Logical Unit Access (ALUA) is a set of SCSI concepts and commands that define path prioritization for SCSI
devices. It allows paths to be described as fast, slow, or down and allows transitions between these states using a common
standard. Live Volume ALUA reports Active/Optimized and Active/Non-optimized ALUA states on the primary and secondary
volumes/storage systems, respectively.
Storage Center supports Live Volume ALUA beginning in version 7.3.
Storage Center Replications and Live Volumes
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