> CommCell Console > Storage > Libraries > Cloud Storage > Planning for Cloud Storage > Planning Archive Storage Tiers

Archive Storage Tier

Commvault supports direct storage to the native archive cloud storage services provided by cloud service providers.

Supported Storage Classes

  • Amazon S3 Glacier Flexible and Deep Archive

  • Alibaba Cloud Object Storage Service Archive

  • Google Cloud Storage Archive

  • Huawei Object Storage Archive

  • Microsoft Azure Storage Archive

  • Oracle Cloud Infrastructure Archive Storage and Archive Storage Classic

Note

Space reclamation operation is not supported for archive storages.

Supported Cloud Storage Features

Archive Cloud Storage products as the source for IntelliSnap Backup Copies, Auxiliary Copy, Synthetic Full backups, Data Verification and Content Indexing operations, is not supported. This is because the data may be archived off and these operations are performed on low latency media.
To perform these operations in Archive Cloud Storage products, first restore the data to the main cloud storage location. When all of the required backup data is restored to the main cloud storage location, perform an Auxiliary Copy, Synthetic Full backup, Data Verification and/or Content Indexing operation on the data.

Note

Combined tier will be enabled by default for all supported archive storages and it cannot be disabled. The Use combined storage option is made default and hidden, and cannot be turned off. This was done to optimize restore SLA and storage utilization, and to enable micro pruning.

Backups

All data is stored in the archive storage tier.

Restores

Recalls from archive storage tiers are slower as both the metadata (index and deduplication metadata), as well as the actual data, resides in the archive storage tier. As a result, multiple passes for metadata and the actual data recalls, is initiated. With each pass taking up to 4 to 12 hours, depending on the storage vendor and the amount of recalled data, recalls will be considerably slower.

For more information, see Restoring Data from Archive Cloud Storage.

Copies

Archive storage as a source copy to create a secondary copy is not recommended. But you can create a secondary copy on archive storage using a non-archive storage tier or another data source as the source copy. However, automatic recall is not supported from a secondary copy and data must be manually recalled using the On-Demand recall method.

For this reason, the following agents are not recommended on archive storage: (For a comprehensive list of agents supporting automatic and on-demand recalls, see Restoring Data from Archive Cloud Storage Using a Workflow - Supported Agents.)

  • Exchange Compliance Archiver

  • Exchange Database

  • Exchange Mailbox

  • Exchange Mailbox (Classic)

  • OnePass for Exchange Mailbox (Classic)

  • Active Directory

  • Office 365

    • Exchange Online

    • OneDrive for Business

    • SharePoint Online

    • Teams

Deduplication

Both deduplicated and non-deduplicated backups are supported.

  • By default, Micro Pruning option is enabled on all the mount paths associated to the archive storage.

  • The Do not deduplicate against objects older than 365 day(s) option is enabled on the Deduplication Database Properties screen. For more information, see Deduplication Database Properties - Settings.

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