Auto-scaling is critical for backup and recovery operations, especially for large-scale operations. Auto-scaling allocates resources dynamically, based on demand, preventing resource bottlenecks and optimizing performance. It then decommissions access nodes when they're not needed. When you need to use auto recovery in a disaster scenario, where the volume of data and the number of workloads to restore can vary significantly, auto-scaling ensures that the necessary computing resources are available, without provisioning more than you need.
For information about auto-scaling for all Virtualization workloads, see Auto-Scaling for Virtualization Access Nodes.
Supported AWS Regions
Auto-scaling is supported for all commercial AWS Regions. Edge locations (such as GovCloud, AWS Outposts, Local Zones, and Wavelength Zones) are not supported.
Amazon Machine Images (AMIs) Used for Auto-Scaled Access Nodes
The software creates the auto-scaled access nodes by cloning an Amazon Machine Image (AMI). Commvault provides a version of the following AMIs for each platform release. To use these images, subscribe to them on AWS Marketplace. The AMIs are deployed for each AWS Region that has instances that reside in the AWS account.
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Commvault Cloud Access Node ARM BYOL: Amazon Linux AWS Graviton (ARM 64-bit)
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Commvault Cloud - Amazon Linux Access Node BYOL: Amazon Linux 2023
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Commvault Cloud - Access Node for Microsoft 365 BYOL: Windows Server 2019 (64-bit x86)
Amazon EC2 Instance Types Used for Auto-Scaled Access Nodes
By default, an AWS Graviton (Arm-based, 64-bit) image with the c7g.xlarge instance type is used to create the auto-scaled access nodes. If an AWS Graviton (Arm-based, 64-bit) image is not available in the AWS Region, then an x86 image with a C6a.xlarge instance is used.
You can specify a different instance type. The following AWS instance types are supported:
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AWS Graviton (Arm-based, 64-bit): c7g.xlarge (default), c6g.large, c6g.xlarge, c6g.2xlarge, r6g.large, r6g.xlarge, r6g.2xlarge, r6g.4xlarge
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x86: c6a.xlarge (default), c5.large, c5.xlarge, c5.2xlarge, m5a.2xlarge, r5a.large, r5a.xlarge
Where Amazon EC2 Auto-Scaled Access Nodes Are Created
The access nodes are created in zones or regions, depending on which transport mode is used:
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EBS direct transport mode: In regions
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AWS VM Import/Export transport mode: In regions
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HotAdd transport mode: In zones