HCP System Management Help


Using the Retire Primary Storage wizard to perform a data migration

Important: This section describes how to use the Retire Primary Storage wizard to migrate data off of one or more primary storage devices, but it does not provide a detailed description of the entire data migration process. For a full description of the data migration process and for an explanation of how the migration service works, see Migration service.

To retire one or more primary storage devices, you can use the Retire Primary Storage wizard on the Retirement panel to specify the devices you want to retire and then configure and run a data migration to move all the data off of the storage devices you want to retire and onto one or more other primary storage devices.

When configuring a data migration on a RAIN system, you select nodes to be retired. When configuring a data migration on a SAIN system, you can either retire an entire storage array or individual nodes.

To use the Storage page to perform a data migration in preparation for retiring primary storage:

1.On the left side of the Storage page, click on Retirement.

2.On the Retirement panel, click on the Retire Storage button.

The Get Started wizard opens. You use this wizard to select the type of storage you want to retire. Once you select a type of storage, the System Management Console dynamically builds either the Retire Primary Storage wizard or the Retire Extended Storage wizard, depending on the type of storage you selected.

3.In the Get Started wizard, click on the arrow and select Primary Storage from the dropdown list.

4.Click on the Go button.

The Get Started wizard exits, and the Retire Primary Storage wizard opens.

5.On the Select page of the Retire Primary Storage wizard, in the Select Hardware for Retirement section, use the checkboxes to select the RAIN system storage nodes you want to retire. If you're retiring a SAIN system, either select Retire Entire Array and select the arrays you want to retire or select Retire Specific Hardware Nodes and select the nodes you want to retire.

To clear your selections and start over, click on the Cancel button.

6.Click on the Next button.

The Review page of the Retire Primary Storage wizard opens, displaying step two of the migration configuration process (Review configuration summary and confirm). The Configuration Summary section on this page in the wizard indicates whether the migration configuration is acceptable.

Note:  

When you click on the Next button, HCP checks that the system is in a valid state to perform the migration. This includes checking for degraded RAID groups. This check can take up to 90 seconds.

Certain hardware errors, such as a degraded RAID group on a source or target node, prevent you from configuring a data migration. In such cases, you need to fix the problem before you can continue.

If the configuration is not acceptable, you can click on the view details link in the Configuration Summary section to display the specific reasons why. You can also click on the Configuration Report link to download the configuration summary and details to a file. The default name for this file is Configuration-Report.txt.

The Configuration Details section on the Review page in the Retire Primary Storage wizard lists the RAIN system nodes or the SAIN system storage arrays that are selected for migration

7.Take one of these actions:

oTo change the list of selected nodes or storage arrays, click on the Previous button to return to the Select page in the wizard. Use this page to change your selections. Then click on the Next button to return to the Review page in the wizard.

oTo cancel the migration and exit the wizard, click on the Cancel button.

oIf the list of selected storage devices is correct, and you want to perform the data migration, continue on to step 8.

8.Optionally, add a description of the data migration and/or change the performance level for the migration service:

oTo add a description:

a.Click on the Add description link.

b.In the text box that opens, type a description of the migration. This text can be up to 1,024 characters long and can contain any valid UTF-8 characters, including white space.

oTo change the performance level, in the Performance Level field, select Low, Medium, or High. The higher the performance level, the greater the load on the HCP system.

9.Click on the Start Migration button.

The migration service begins the data migration process, and the wizard exits. The migration service reports its progress on the Retirement panel on the Storage page. You can refresh this page at any time to view the current status of the data migration.

If any nodes become unavailable while the migration service is running, the service stops migrating data. When those nodes become available, the service automatically starts migrating data again.

You can use the Retirement panel on the Storage page to manage the migration service throughout the entire data migration process. At any time during the migration, you can click on the Retirement Settings button to display the controls that you can use to change the performance level of the migration, pause and resume the migration as needed, or cancel the migration. You can also use the appropriate field in the Retirement Settings section to modify the migration description at any time (for example, to record when and how long the migration was paused).

10.When the data migration is complete (that is, the migration status is Migrated):

oIf a migration report is available, review it. This report identifies tenants that own namespaces containing unacknowledged irreparable objects. For the default tenant and for HCP tenants that are configured to allow system-level users to manage them, the report also lists the unacknowledged irreparable objects in those namespaces.

Note: If the migration service encounters one or more objects that it cannot migrate, it marks those objects as irreparable (if they weren’t already marked that way).

oIf the data migration statistics show that not all objects were migrated, contact your authorized service provider for help.

11.Submit a request to your authorized service provider to finalize the migration and remove the retired hardware.

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