I am in process of configuring VSA backup but looking for best practice to attain better performance.
- what’s recommendation for maximum VMs per sub-client?
- Maximum data store LUNs can be presented to proxy machine?
I am in process of configuring VSA backup but looking for best practice to attain better performance.
Good afternoon. There is no maximum number for either. It really depends on the performance of your network/storage network and how robust your proxies are.
Also for the VSA proxies (Access Nodes), the CPU and RAM is also going to limit how many streams can be used. So if you do increase the streams then look though our documentation for the best size for your Access Nodes and how that can be balanced with the number of nodes:
https://documentation.commvault.com/11.26/expert/97216_backup_workload_distribution.html
Also for cloud based protection you can use the auto scaling Access Nodes feature to save costs….https://documentation.commvault.com/11.25/essential/111430_automatic_scaling_for_amazon_access_nodes.html
Hi,
If I may add, another interesting thing to look at is the maximum devices that you can attach to a proxy/Proxy VM, which would be (in short) around 20, depending on the backup mode..
Like your proxy has 3 disks drives, and the VMs you need to backup have 5 disks each (VMDKs), if you configure per VM subclient 10 streams, then when you backup 1 VM, all its VMDKs will be attached to your proxy. This way your proxy could be able to backup 4 VMs in parallel before reaching the max devices attached to a VM limit.
This is a very short explanation, but that’s the idea.
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