Dell EMC Metro node 7.1 CLI Guide

Contexts

All contexts.

Syntax

device mirror-isolation auto-unisolation enable

[-h|--help]

[--verbose]

Arguments

Description

This command enables auto mirror unisolation.

Mirror isolation provides a mechanism to automatically unisolate mirrors that were previously isolated. When mirror isolation is enabled, auto-unisolation allows the system to automatically unisolate the underlying storage-volumes once their performance is in the acceptable range.

Examples

Shows auto-unisolation enabled when mirror isolation is disabled on both clusters:

VPlexcli:/> device mirror-isolation auto-unisolation enable
Mirror isolation is not enabled on clusters cluster-1,cluster-2.
Auto-unisolation is enabled on clusters cluster-1,cluster-2.

Shows auto-unisolation enabled when mirror isolation is disabled on one of the clusters:

VPlexcli:/> device mirror-isolation auto-unisolation enable
Mirror isolation is not enabled on cluster cluster-2.
Auto-unisolation is enabled on clusters cluster-1,cluster-2.

Shows auto-unisolation when mirror isolation is enabled:

VPlexcli:/> device mirror-isolation auto-unisolation enable
Auto-unisolation is enabled on clusters cluster-1,cluster-2.

Shows auto-unisolation enable operation failed as the feature is not supported:

VPlexcli:/> device mirror-isolation auto-unisolation enable
Mirror isolation is not enabled on clusters cluster-1,cluster-2.
device mirror-isolation auto-unisolation enable:  Evaluation of <<device mirror-isolation auto-unisolation enable>> failed.
cause: 							Could not enable auto unisolation.
cause: 							Could not enable auto unisolation.
							Modifying auto unisolation is not supported by this version of firmware.

Shows auto-unisolation enable operation failed because one cluster is not available:

VPlexcli:/> device mirror-isolation auto-unisolation enable
device mirror-isolation auto-unisolation enable:  Evaluation of <<device mirror-isolation auto-unisolation enable>> failed.
cause:                                            Could not enable auto unisolation.
cause:                                            Firmware command error.
cause:                                            communication error recently.

Shows auto-unisolation enable operation failed because the meta volume is not ready:

VPlexcli:/> device mirror-isolation auto-unisolation enable
device mirror-isolation auto-unisolation enable:  Evaluation of <<device mirror-isolation auto-unisolation enable>> failed.
cause:                                            Could not enable auto unisolation.
cause:                                            Could not enable auto unisolation.
                                                   Firmware command error. The active metadata device is not healthy enough to persist the change fully.

See also

• device mirror-isolation auto-unisolation disable
• device mirror-isolation disable
• device mirror-isolation enable
• device mirror-isolation show
• Dell EMC Administration Guide for metro node