Administrator Guide
Table Of Contents
- Dell EMC Storage Systems Administrator Guide for the metro node appliance
- Contents
- Preface
- CLI Workspace and User Accounts
- Meta Volumes
- System Management
- Thin support in metro node
- Provisioning Storage
- Volume expansion
- Data migration
- About data migrations
- Migrating thin-capable storage
- About rebuilds
- One-time data migrations
- Batch migrations
- Prerequisites
- Creating a batch migration plan
- Checking a batch migration plan
- Modifying a batch migration file
- Starting a batch migration
- Pausing/resuming a batch migration (optional)
- Canceling a batch migration (optional)
- Monitoring a batch migration’s progress
- Viewing a batch migration’s status
- Committing a batch migration
- Cleaning a batch migration
- Removing batch migration records
- Configure the WAN Network
- Cluster Witness
- Consistency Groups
- Performance and Monitoring
- Metro node with active-passive storage arrays
To change the visibility property from the root context:
VPlexcli:/> set /clusters/cluster-1/consistency-groups/TestCG::visibility
cluster-1,cluster-2
Example of modify: apply a detach rule
The following table lists the applicable detach-rules for consistency groups with various settings for visibility and storage-at-
clusters.
About this task
Table 11. Consistency groups detach-rules and visibility, storage-at-volumes
visibility storage-at-clusters Applicable detach-rule settings
cluster-1 cluster-1 N/A
cluster-1 and cluster-2 cluster-1 and cluster-2
● no-automatic-winner
● winner cluster-1
● winner cluster-2
cluster-1 and cluster-2 cluster-1
● no-automatic-winner
● winner cluster-1
To apply a detach rule that will determine the behavior of all volumes in a consistency group:
Steps
1. Use the ll command to display the current detach rule (if any) applied to the consistency group:
VPlexcli:/clusters/cluster-1/consistency-groups/TestCG2> ll
Attributes:
Name Value
-------------------- ----------------------
active-clusters []
cache-mode synchronous
detach-rule -
.
.
.
2. Use one of the consistency-group set-detach-rule commands to apply a detach-rule to the consistency group:
● Use the consistency-group set-detach-rule no-automatic-winner command to set the detach-rule as
no-automatic-winner.
In the following example, the command is used in the target consistency group’s context:
VPlexcli:/clusters/cluster-1/consistency-groups/TestCG> set-detach-rule no-
automatic-winner
● Use the consistency-group set-detach-rule winner command to specify which cluster is the winner, and
the number of seconds metro node waits after a link outage before detaching the winning cluster.
In the following example, the command is used in the root context:
VPlexcli:/> consistency-group set-detach-rule winner --cluster cluster-1 --delay 5s
--consistency-groups TestCG
Consistency Groups
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