About dynamic multi-streaming
Multi-streaming backup for Cloud object store policy runs simultaneous backup streams for a given backup selection. The backup selection is divided into several streams that run in parallel, resulting in a faster backup. The number of streams can be configured for each policy in the backup selection tab of the cloud object store policy. Each backup stream creates a unique backup image. Eventually, all the images created by the streams for that backup selection represent the backup of that specific selection.
Dynamic muti-streaming is enabled by default on all newly created Cloud object store policies.
You can specify the maximum number of streams that you want to use for a bucket or container in the policy attributes.
See Policy attributes.
Entire buckets/containers are backed up when you use dynamic multi-streaming.
The number of streams that you specify in a policy is applicable for each of the buckets that the policy protects. For example, if you specify 10 streams in the policy and select five buckets for backup, you get 50 concurrent streams. Some streams may go to a queue, if the maximum number of concurrent jobs allowed in the storage unit selected for the policy, is less than the total number of streams that are running across different policies. For optimal performance, keep the allowed property of selected storage greater than the total number of streams that you expect to run across the policies.
You cannot use a scale-out server as a backup host, when you use dynamic multi-streaming.
Dynamic multi-streaming requires staging location path.
Job retry feature does not work for backup jobs.
Dynamic multi-streaming is not available for Azure Data Lake storage and Azure Data Lake storage Government providers.
Checkpoint restart is not supported.
You must configure a temporary staging location as per guidelines to use this feature. See Configure a temporary staging location.
Dynamic multi-streaming starts all the backup streams for a bucket or container at the same time and writes to a storage unit. Therefore, using tape storage units as the target for primary backup copies is not recommended. You can use an MSDP storage as the target for the first backup copy, and configure a tape storage as the target for secondary or duplication copies.