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Backing up and restoring the database

Users can configure backups of EPAS (DBaaS) through the Samsung Cloud Platform Console and restore from the backed‑up files.

EPAS(DBaaS) Backup

To ensure that users’ data can be stored safely, EPAS (DBaaS) provides a data backup feature based on its own backup commands. Additionally, you can verify whether the backup was successful using the backup history feature, and you can also delete backed‑up files.

Configure Backup

For instructions on configuring backups for EPAS (DBaaS), see Create EPAS (DBaaS).

To modify the backup settings of the created resource, follow the steps below.

Caution
  • For reliable backups, we recommend adding a separate BACKUP storage or sufficiently expanding the storage capacity. * Especially when the backup data exceeds 100 GB and undergoes frequent changes, please provision additional storage amounting to approximately 60 % of the data size. * For storage addition and expansion methods, refer to the EPAS(DBaaS) Add Storage and EPAS(DBaaS) Expand Storage guides.
  • If a backup is configured, it will be performed at the designated time after the set time, and additional fees will be incurred based on the backup size.
  • If you change the backup setting to Unset, backup execution will stop immediately, and the stored backup data will be deleted and can no longer be used.

To set up a backup, follow these steps.

  1. All Services > Database > EPAS(DBaaS) Click the menu. 1. Go to the Service Home page of EPAS (DBaaS).
  2. On the Service Home page, click the EPAS(DBaaS) menu. 2. Go to the EPAS(DBaaS) List page.
  3. EPAS(DBaaS) List page: click the resource for which you want to configure a backup. 3. EPAS(DBaaS) Details page is accessed.
  4. Click the Edit button of the backup item. 4. Backup Settings popup window opens.
  5. When configuring a backup, click Enable in the Backup Settings popup, select the retention period, backup start time, and Archive backup interval, then click the Confirm button.
    • If you stop the backup configuration, deselect Use in the Backup Settings popup and authenticate using the logged-in user’s mobile phone.
      Once user authentication is completed, the backup configuration is disabled and backup execution stops.

Check backup history

Information
To set notifications for backup success and failure, you can configure them via the Notification Manager product. For a detailed usage guide on configuring notification policies, refer to 알림 정책 생성하기.

To view the backup history, follow these steps.

  1. All Services > Database > EPAS(DBaaS) Click the menu. 1. Go to the Service Home page of EPAS (DBaaS).
  2. On the Service Home page, click the EPAS(DBaaS) menu. 2. Go to the EPAS(DBaaS) List page.
  3. EPAS(DBaaS) List page, click the resource to view the backup history. 3. Go to the EPAS(DBaaS) Details page.
  4. Click the Backup History button. 4. The Backup History popup opens.
  5. Backup History In the popup window, you can view the backup status, version, backup start time, backup completion time, and size.

Delete backup file

To delete the backup history, follow these steps.

Caution
Backup files cannot be restored after deletion. Please be sure to verify whether the data is unnecessary before deleting it.
  1. All Services > Database > EPAS(DBaaS) menu, click it. 1. Go to the Service Home page of EPAS (DBaaS).
  2. On the Service Home page, click the EPAS(DBaaS) menu. 2. Go to the EPAS(DBaaS) List page.
  3. On the EPAS(DBaaS) List page, click the resource to view its backup history. 3. Go to the EPAS(DBaaS) Details page.
  4. Click the Backup History button. 4. Backup History The popup window opens.
  5. Backup History In the popup window, check the files you want to delete, then authenticate using the logged-in user’s mobile phone.
    • When user authentication is completed, the backup file is deleted.

EPAS(DBaaS) Recover

If recovery is needed from a backup file due to a failure or data loss, the restore function can recover based on a specific point in time. When you perform an EPAS (DBaaS) recovery, a new server is created with the OS image from the initial provisioning point, the database is installed with the version from the backup point, and the recovery proceeds with the database’s configuration information and data.

Caution
To perform recovery, you need at least a capacity equal to the Disk data type size. If there is insufficient disk space, the recovery may fail.

To restore EPAS (DBaaS), follow the steps below.

  1. All Services > Database > EPAS(DBaaS) Click the menu. 1. Go to the Service Home page of EPAS (DBaaS).
  2. On the Service Home page, click the EPAS(DBaaS) menu. 2. Go to the EPAS(DBaaS) List page.
  3. EPAS(DBaaS) resources On the list page, click the resource you want to restore. 3. Navigate to the EPAS(DBaaS) Details page.
  4. Click the Database Recovery button. 4. Database Recovery Navigate to the page.
  5. After entering the relevant information in the Database Recovery Configuration area, click the Complete button.
    Category
    required status
    		Detailed description
    Recovery TypeRequiredSet the point in time the user wants to recover
    • Backup point (recommended): Recover based on the backup file. Select from the list of backup points displayed in the list
    • Custom point: Recover to a user‑desired point within the range of recoverable backup points. The recoverable period depends on the Archive backup interval setting, allowing recovery to any point from the start of the first backup up to 1 hour/30 minutes/10 minutes/5 minutes before the current time. Select the date and time to recover
    Server name prefixRequiredRecovery DB server name
    • Start with a lowercase English letter and use lowercase letters, numbers, and special characters (-) to enter 3 to 16 characters
    • Based on the server name, a postfix such as 001, 002 is appended to generate the actual server name
    Cluster nameRequiredRecovery DB cluster name
    • Enter using English letters, 3 to 20 characters
    • A cluster is a unit that groups multiple servers
    Service Type > Server TypeEssentialRecovery DB server type
    • Standard: Standard specification commonly used
    • High Capacity: Large-capacity server with 24 vCores or more
    Service Type > Planned ComputeSelectionStatus of resources with Planned Compute configured
    • In Use: Number of resources with Planned Compute configured that are currently in use
    • Configured: Number of resources with Planned Compute configured
    • Coverage Preview: Amount applied per resource by Planned Compute
    • Create Planned Compute Service: Navigate to the Planned Compute service application page
    Service Type > Block StorageRequiredBlock Storage settings used by the recovery DB
    • Basic OS: Area where the DB engine is installed
    • DATA: Storage area for table data, archive files, etc.
      • Applied identically with the storage type set in the original cluster
      • Enter capacity as a multiple of 8 within the range 16 to 5,120
    • Additional: Storage area for DATA, Archive, TEMP, Backup data
      • Applied identically with the storage type set in the original cluster
      • In the recovery DB, only DATA, TEMP, and Archive purposes can be added
      • After selecting Use, enter the storage purpose and capacity
      • To add storage, click the Add button, and to delete, click the x button
      • Capacity can be entered as a multiple of 8 within the range 16 to 5,120, and up to 9 can be created
    Database usernameRequiredDatabase username
    • Apply the same username set in the original cluster
    Database Port numberRequiredDatabase Port number
    • Apply the same Port number configured in the original cluster
    IP access controlSelectService Access Policy Configuration
    • Since the access policy is set for the IP entered on the page, you do not need to configure a separate Security Group policy
    • Enter in IP format (example: 192.168.10.1) or CIDR format (example: 192.168.10.0/24, 192.168.10.1/32) and click the Add button
    • To delete an entered IP, click the x button next to the entered IP
    maintenance periodSelectDatabase maintenance window
    • If you select Use, set the day of week, start time, and duration
    • It is recommended to set a maintenance window for stable management of the DB. Patch operations will be performed at the scheduled time, causing service interruptions
    • If set to not use, Samsung SDS is not responsible for issues arising from unapplied patches.
    tagSelectAdd Tag
    • Add Tag after clicking the Add Tag button Enter or select Key, Value values
    Table. EPAS (DBaaS) recovery configuration items
DB Service Manage
Configure Read Replica