Specifications

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Cisco SN 5428-2 Storage Router Software Configuration Guide
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Chapter 12 Command Line Interface Reference
failover eligibility
failover eligibility
To enable failover by eligibility for all SCSI routing instances running on the storage router, use the
failover eligibility command. To disable failover by eligibility, use the no form of this command.
failover eligibility on
no failover eligibility on
Syntax Description
Defaults Failover by eligibility is enabled.
Command Modes Administrator mode.
Command History
Usage Guidelines Each storage router in a cluster maintains and exchanges information about available resources. Failover
by eligibility is enabled by default; HA bases the decision to automatically fail over a SCSI routing
instance to another node in a cluster based on the Fibre Channel and other resources available to that
SCSI routing instance.
Failover occurs when:
• All mapped targets are unavailable or a critical resource for the SCSI routing instance is unavailable,
and some or all mapped targets would be available from another node in the cluster. A critical
resource can be a configured Gigabit Ethernet interface, a required Fibre Channel interface, or an
internal resource needed to run the SCSI routing instance.
• Some mapped targets are unavailable and all mapped targets are available on another node in the
cluster.
• All mapped targets are available, but another node in the cluster also has all targets available and is
designated at the primary for the SCSI routing instance.
• The storage router stops receiving heartbeats from another node within the cluster.
For more manual control over where a SCSI routing instance runs, use the no failover eligibility on
command to prevent failover by eligibility on a storage router. If a SCSI routing instance is running on
(or fails over to) a storage router that is configured with failover by eligibility turned off, it will continue
running on that storage router unless there are no mapped targets available or a critical resource is
unavailable.
Use the failover eligibility on command to restore normal failover functions.
The failover eligibility setting is not retained across a reboot; restarting the storage router restores the
default setting (failover by eligibility is enabled).
on Keyword used to enable failover by eligibility for all SCSI routing instances
running on the storage router.
Release Modification
3.2.1 This command was introduced.