The Commvault Cloud software uses the Nutanix Files Changed File Tracking APIs for faster incremental backups.
A Change File Tracking operation determines which files changed between the previous and current backup snapshots. When you run an incremental backup, only the files that changed are scanned, so the backup is faster.
Nutanix Files REST APIs
Nutanix Files REST APIs provide the following capabilities for optimized scan and backup performance:
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An incremental scan operation creates snapshots and performs change file tracking.
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A Change File Tracking operation determines which files changed between the previous and current backup snapshots. This requires inbound access to TCP 8000 on the Nutanix devices.
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The scan and backup operations read data from the snapshots, to shift load from production data shares. To offload production data shares, two snapshots are created and retained: one for the current backup operation and the other for the previous backup operation.