QNAP

Hybrid Backup Sync

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Data Integrity Check

Data Integrity Check is a feature in HBS 3 that analyzes your backups and attempts to repair any corrupted data. You can run data integrity checks manually, or configure scheduled checks when creating a backup job. HBS 3 offers two types of data integrity checks: quick check and content check.

Tip:

Data integrity checks require significant system resources and may take a long time to complete. For the best processing speed, QNAP recommends using an x86-based device with SSDs.

Feature

Quick Check

Content Check

Method

Compares the existence, size, modification time, and/or hash value of each file

  • NAS-to-NAS backup jobs where HBS 3 on the destination NAS supports data integrity checks: Compares the existence, size, modification time, and hash value of each file

  • All other jobs: Downloads all files temporarily and calculates hash values for comparison

Important:

Some cloud service providers charge additional fees for download traffic.

Supported Jobs

Created in HBS 3 v16 or Later

All backup jobs except NAS-to-NAS jobs with QuDedup disabled

All backup jobs

Note:

For NAS-to-NAS jobs, if the destination NAS runs HBS 3 v15 or earlier, only jobs with QuDedup enabled are supported.

Created in HBS 3 v15 or Earlier

All backup jobs except NAS-to-NAS jobs with QuDedup disabled

None

Supported Cloud Destinations

HBS 3 currently supports all cloud destinations except the following:

  • Amazon Glacier

  • Amazon S3 Glacier Deep Archive

  • Azure Archive Storage

Manual checks

  1. Open HBS 3.

  2. Go to Backup & Restore.

  3. Select an existing backup job.

  4. Click Check Data Integrity.

  5. Click Quick Check.

  1. Open HBS 3.

  2. Go to Backup & Restore.

  3. Select an existing backup job.

  4. Click Check Data Integrity.

  5. Click Content Check.

Note:

You must enable Content Check in the backup job configuration in order to run a content check.

For details, see Creating a backup job.

Scheduled checks

For details on configuring quick check and content check schedules, see Creating a backup job.