Hyper Converged Infrastructure (HCI/aSV)

Sangfor HCI and aSV provide a unified infrastructure combining compute, storage, networking, and built-in security to simplify deployment, operations, and services.
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6.11.1R1
Hyper Converged Infrastructure (HCI/aSV) {{ breadTitle }} User Manual Reliability Configuration Guide Virtual Machine Disaster Recovery and Backup CDP Backup and Recovery Backup Policy
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Backup Policy

{{ $t('productDocDetail.updateTime') }}: 2026-01-05

Description

This section guides administrators in configuring CDP policies in automatic virtual machine backup scenarios. The HCI platform provides a virtual machine-level Continuous Data Protection (CDP) solution, which records every IO of important services. It can be restored to a complete service server in seconds and quickly retrieve the services at any IO moment in the past. System Files.

Precautions

  1. The formula for calculating the maximum space used by IO logs: average write IO speed * 3600 (1 hour and seconds) * retention time (hours) / 1024 = GB. For example, if the average writes IO speed of the business system is 10MB/s, the retention time is 1 day, and the interval is 1 hour, the maximum space used by the IO log is 10 * 3600 * 24 / 1024 = 844 GB.
  2. It is recommended to start with three HCI cluster nodes.
  3. CDP protection of physical disks mapped in virtual machines is not supported.
  4. Only the destination storage of CDP is supported to be configured on iSCSI, FC, and aSAN.
  5. Only NTFS and FAT32 file systems support file retrieval functions, and the Linux system does not support file retrieval operations.
  6. Using the CDP function, if the backup and I/O logs are placed on the external storage and because the I/O logs and backups occupy space, the I/O logs cannot be stored in time, and the I/O log buffer is exhausted. Resulting in CDP interruption. It is recommended not to place backups and logs in the same storage.

Prerequisites

A third-party backup repository has been configured.

Steps

  1. Navigate to Compute, move to the selected VM and click More.

  1. Click Backup/CDP Policy to enter the VM backup page.

  1. On the page that is displayed, set IO Activity Log Retention Period, IO Activity Logging Interval, and Backup Schedule, enable Quiesce Guest File System as needed, and click Next.

  1. Select the VM to be configured with the CDP policy.

  1. Select the Backup Repository and IO Activity Log Repository.

  1. Fill in the policy name and description(optional).

  1. Confirm the configuration of the CDP policy. If there is an error, you can go back and click Prev to modify it step by step. After confirming there is no problem, click OK to make the scheduled backup policy take effect.