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Dell PowerVault ME5 Series Storage System Deployment Guide

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Diagnostic steps for replication setup

The tables in the following section show menu navigation for virtual replication using the PowerVault Manager.

NOTE SAS controller enclosures do not support replication.

Can you successfully use the replication feature?

Table 1. Diagnostics for replication setup: Using the replication feature
Answer Possible reasons Action
Yes System functioning properly No action required.
No Compatible firmware revision supporting the replication feature is not running on each system that is used for replication. Perform the following actions on each system used for virtual replication:
  • In the PowerVault Manager Dashboard, select Maintenace > Firmware. The Firmware panel opens, showing the firmware versions that are installed in each controller.
  • If necessary, update the controller module firmware to ensure compatibility with the other systems.
  • See the topic about updating firmware in the Dell PowerVault ME5 Series Storage System Administrator’s Guide for more information about compatible firmware.
No Invalid cabling connection. (If multiple enclosures are used, check the cabling for each system.) Verify controller enclosure cabling:
  • Verify use of proper cables.
  • Verify proper cabling paths for host connections.
  • Verify cabling paths between replication ports and switches are visible to one another.
  • Verify that cable connections are securely fastened.
  • Inspect cables for damage and replace if necessary.
No A system does not have a pool that is configured. Configure each system to have a storage pool.

Can you create a replication set?

After valid cabling, and network availability, create a replication set: Go to Provisioning > Volumes, select a volume and then click Add Data Protection. Follow the setup wizard to connect to another system and set up a replication schedule.

Table 2. Diagnostics for replication setup – Creating a replication set
Answer Possible reasons Action
Yes System functioning properly. No action required.
No On controller enclosures equipped with iSCSI host interface ports, replication set creation fails due to use of CHAP. If using CHAP, see the topics about configuring CHAP and working in replications within the Dell PowerVault ME5 Series Storage System Administrator’s Guide.
No Unable to create the secondary volume (the destination volume on the pool to which you replicate data from the primary volume).
  • Review event logs for indicators of a specific fault in a replication data path component. Follow any Recommended Actions.
  • Verify valid specification of the secondary volume according to either of the following criteria:
    • A conflicting volume does not exist.
    • Available free space in the pool.
No Communication link is down. Review the Alerts and Activity in the PowerVault Manager Dashboard for indicators of a specific fault in a host or replication data path component.

Can you replicate a volume?

Table 3. Diagnostics for replication setup – Replicating a volume
Answer Possible reasons Action
Yes System functioning properly. No action required.
No Nonexistent .
  • Determine existence of primary or secondary volumes.
  • If a replication set has not been successfully created, go to Provisioning > Volumes, select a volume and then click Add Data Protection. Follow the setup wizard to connect to another system and set up a replication schedule.
  • Review the Alerts and Activity in the PowerVault Manager Dashboard for indicators of a specific fault in a replication data path component. Follow any Recommended Actions.
No Network error occurred during in-progress replication.
  • Review event logs for indicators of a specific fault in a replication data path component. Follow any Recommended Actions.
  • Go to Provisioning > Volumes and select the Data Protection table to display replications and associated metadata.
  • Replications that enter the suspended state can be resumed manually (see the Dell PowerVault ME5 Series Storage System Administrator’s Guide for additional information).
No Communication link is down. Review the Alerts and Activity in the PowerVault Manager Dashboard for indicators of a specific fault in a host or replication data path component.

Has a replication run successfully?

Table 4. Diagnostics for replication setup: Checking for a successful replication
Answer Possible reasons Action
Yes System functioning properly No action required.
No Last Successful Run shows N/A
  • Go to Provisioning > Volumes , and select the volume that is a member of the replication set.
    • Select the Data Protection table.
    • Check the Last Successful Run information.
  • If the replication has not run successfully, use the PowerVault Manager to replicate as described in the topic about working in replications in the Dell PowerVault ME5 Series Storage System Administrator’s Guide.
No Communication link is down Review the Alerts and Activity in the PowerVault Manager Dashboard for indicators of a specific fault in a host or replication data path component.

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