File Storage NAS data protection solutions-Backup and Disaster Recovery Center(BDRC)-阿里云帮助中心

Compare the data protection solutions for File Storage NAS (General-purpose NAS) in terms of backup capabilities, restoration methods, backup storage costs, recommended scenarios, protection scenarios, and benefits to choose the solution that best fits your business and compliance requirements.

Note

For Extreme NAS, you must use Extreme NAS snapshots or On-premises NAS to back up data. Extreme NAS is not covered in this topic.

Services

Service name	File Storage NAS data protection solution	References
File Storage NAS	NAS recycle bin	Recycle bin
Cloud Backup	NAS backup	File Storage NAS backup
Cloud Backup	Cross-region replication of NAS backup vaults	Cross-region backup

Backup capabilities

Service name	File Storage NAS data protection solution	Backup capability
File Storage NAS	NAS recycle bin	When the recycle bin is enabled, deleted files and directories are temporarily stored in it and permanently removed after a specified retention period. During the retention period, you can restore these files and directories along with their metadata, such as user identifiers (UIDs), group identifiers (GIDs), and ACLs.
Cloud Backup	NAS backup	NAS file systems, directories, or individual files are periodically backed up to a backup vault based on a specified policy. Capacity and Performance NAS files are supported, along with the NFS and CIFS/SMB protocols. If files are accidentally deleted or tampered with, you can use Cloud Backup to restore them. For fine-grained protection, you can back up all files in a file system or only files that match specified conditions. No backup agent or client is required.
Cloud Backup	Cross-region replication of NAS backup vaults	You can create a remote mirror repository for a backup vault. Data in the backup vault is automatically replicated to the mirror repository, enabling cross-region multi-version backups that can be used for remote data restoration.

Restoration methods

Service name	File Storage NAS data protection solution	Restoration method
File Storage NAS	NAS recycle bin	Use the console or API to restore files from the recycle bin to the original path or a different path. Note Each file system allows you to run only one restore job at a time. You can restore only one file or directory in a single restore job.
Cloud Backup	NAS backup	Use the console or API to restore backup points of a single file, multiple files that match a specified rule, or all files in a file system to the original or a different directory.
Cloud Backup	Cross-region replication of NAS backup vaults

Backup storage costs

Service name	File Storage NAS data protection solution	Backup storage cost
File Storage NAS	NAS recycle bin	Enabling the recycle bin is free. However, you are charged for the storage space occupied by files temporarily stored in the recycle bin. Storage fees are calculated based on the storage type of the files before deletion.
Cloud Backup	NAS backup	Cloud Backup provides the same deduplication and compression capabilities as professional backup software. You pay only for the backup storage space after deduplication and compression. Note The deduplication and compression ratio varies by data type and incremental data size. Typically, the ratio for text files is about 30:1 and for VMware virtual machines exceeds 100:1. Actual ratios may vary.
Cloud Backup	Cross-region replication of NAS backup vaults	Storage space fees for local and remote backups Fees for cross-region replication traffic

Recommended scenarios

Service name	File Storage NAS data protection solution	Recommended scenario
File Storage NAS	NAS recycle bin	Accidental file deletion from a General-purpose NAS file system can interrupt your business or cause permanent data loss. To prevent these issues, enable the recycle bin feature.
Cloud Backup	NAS backup	You need to back up files, directories, and file systems on a regular basis (hourly, daily, or weekly), with a defined retention period for backup data, to handle unexpected data restoration needs or meet compliance requirements. Historical versions need to be retained for data restoration. Batch backup or restoration of multiple files is required.
Cloud Backup	Cross-region replication of NAS backup vaults	To prevent regional disasters from affecting business continuity, create remote backups for your files, directories, and NAS file systems. Backup data can be used for remote disaster recovery.

Protection scenarios

Service name	File Storage NAS data protection solution	Protection scenario
File Storage NAS	NAS recycle bin	Accidentally deleted data Important The NAS recycle bin only stores deleted files temporarily. It cannot restore historical versions after data changes. To restore historical versions, use the NAS backup feature of Cloud Backup.
Cloud Backup	NAS backup	Ransomware attacks (we recommend that you enable backup locking and backup point virus detection for core data) Accidentally deleted data (we recommend that you enable the immutable backup feature for core data)
Cloud Backup	Cross-region replication of NAS backup vaults	Regional natural disasters O&M errors

Benefits

Service name	File Storage NAS data protection solution	Benefit
File Storage NAS	NAS recycle bin	Provides transparent, lightweight file-level protection against accidental deletion, with no changes to your business system or dependencies on the operating system. Files can be restored in seconds.
Cloud Backup	NAS backup	As a SaaS service, Cloud Backup offers comprehensive enterprise-level capabilities for various compliance and business requirements: cross-account backup, immutable backup, special retention period, automatic archiving of backup data, and virus detection at backup points. Additional benefits include a user-friendly console, low O&M costs, out-of-the-box availability, and seamless integration with the backup process.
Cloud Backup	Cross-region replication of NAS backup vaults