Azure Backup
An Azure backup service that provides built-in management at scale.
1,244 questions
Churn rate high
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Siva
646
Reputation points
Hi Team,\
When churn rate is(delta size) like 2TB, 3 TB.. backup is taking more time for complete the vm backup. Can you please let us know, then why we are supporting 32 TB of disk for provisioning the disks in azure, if it is not achievable?
Every time msft is saying 200gb of churn will take 8 hrs for complete. if it is more then it will be high.
what are the possibility we can check and fix the issue..?
Thanks
{count} votes
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SadiqhAhmed-MSFT 44,421 Reputation points Microsoft Employee2022-03-31T07:44:01.073+00:00 Hello @Siva Happy to answer your question!
You have a question on churn rate and the possibilities of backing up high volume VMs.
Suggest you to check what is the daily change rate and if the daily change rate is in TBs and you would like to take backup of all the data within 24 hours then Azure VM Backup might not be a good solution as every solution comes with its own limitations.
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SadiqhAhmed-MSFT 44,421 Reputation points Microsoft Employee
2022-04-11T05:54:20.687+00:00 We support adding 32TB disks but that doesn't mean customers will generate 32TB of data on a daily basis. Suggest you to raise a support case where support team will be able to answer which disk is generating high churn from backup perspective and propose possible solution like disk fragmentation.
Workaround: You can also leverage Snapshot based backups if slow backups are hampering your daily schedule but the downside will be you will only get crash consistent backups.
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