Rehydrating Data

Use the following procedures to work with rehydration jobs.

Rehydrate uploaded data

You can run one or more rehydration jobs in parallel. If you choose to start all pending jobs at once, the Rehydrator schedules the jobs to avoid overloading the instance. Jobs are scheduled such that at any point there are at most 8 1-TB tasks running simultaneously to achieve optimal rehydration speed.

Use the following procedure to start a rehydration job.

  1. Open the Rehydrator web interface in a browser by typing the URL that was provided as the Site address value when you deployed the instance.
  2. Sign in using the Rehydrator Username and Rehydrator Password credentials you noted when you deployed the instance.
  3. Choose the rehydration jobs to run.

    • To start running a specific rehydration job, click the start icon associated with that job in the Jobs Pending pane.

    • To start running all pending rehydration jobs, click the start icon at the top of the Jobs Pending pane.

  4. Click OK to start the selected rehydration jobs.

Retry failed rehydration jobs

A rehydration job can fail for various reasons, usually related to cloud networking issues. The Rehydrator instance will retry failed rehydration jobs several times before terminating them with a status of either failed or completed with issues. If a job fails either partially or completely, try running it again.

To retry a rehydration job, open the Rehydrator web interface, and then click the start icon associated with that job in the Jobs Completed pane.

Search for a rehydration job

  1. Open the Rehydrator web interface.
  2. Click the search icon in the upper right corner of the page.
  3. Type your desired search criteria.
  4. Click the search icon again to display the job list, filtered by your search criteria.

Refresh the rehydration job dashboard

  1. Open the Rehydrator web interface.
  2. Click the refresh icon in the upper right corner of the page.

Export rehydration job information

Use the following procedure to export rehydration job information.

  1. In the Rehydrator web interface, click the settings icon in the upper right corner of the page.
  2. Click Export to CSV.

    This downloads a file called Jobs_Monitor_Details.csv that contains the job information in comma-separated values format (CSV) to the default download directory on that workstation.

Verify rehydrated data

A check of the integrity of migrated data using hash comparison, checksums, and other mechanisms is performed automatically by the Transfer Appliance software at every stage of your migration. Data integrity issues are generally caught and addressed automatically. For additional certainty, we recommend that you also verify that your files and data have been correctly recovered once they have been rehydrated and moved to the Cloud Storage destination bucket.

Checksums are the most commonly used method for data verification. After migration is complete, you can identify a set of key files from your source data and use a checksum tool to verify the migrated data compared to the original data. To do this, follow the instructions in Working with checksums.

Next steps

Once you've finished rehydrating all of your data, use the procedure in Cleaning Up to clean up resources you no longer need and to request the secure erasure of Transfer Appliance.

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