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leduke
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Backup two Large VMs

Post by leduke »

hello.

I want to daily backup two large servers such as 2To....

Must I create a single bakcup Job or two backup Job.

If i create only one backup job, in the priority order, is the backup of the second VM will start as soon as the first is completed or the two backups will start in the same time ?

Thank you.
dellock6
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Re: Backup two Large VMs

Post by dellock6 »

Hi Alex,
inside the same job multiple VMs are processed sequentially, so vm2 will be saved after backup of vm1 is completed. Probably you would have better deduplication results by creating a single job, but check if the total execution time of the job is compliant to your expectations / needs.

Luca.
Luca Dell'Oca
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veremin
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Re: Backup two Large VMs

Post by veremin »

Hi.

It completely depends on your backup window.

On the one hand, If time required for backups isn't your issue, you should create one job within which vms will be backuped in the needed order.

On the other hand, if backup window is the issue, in this case you should ,probably, create two separate jobs, each including one vm, and run them at same time. Meanwhile, make sure that your backup proxies, as well as, backup repositories are configured to run at least two jobs simultaneously. However, if you’re experiencing lack of available resources (proxy CPU, memory), you’ll have to spend some time to more thoughtful allocation in order to avoid unnecessary overload.

Also be aware, that in case of these machines having been created from a single template or having gigabytes of free space or many identical blocks, it may be useful to put these multiple VMs within one job to get higher deduplication rates. Which, in its turn, will allow you to save space.

Furthermore, if you provide a little bit more information related to your infrastructure (VMs,proxies, storages and etc), you’ll be able to receive a more subtle answer from community corresponding your task.

Thanks.
leduke
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Re: Backup two Large VMs

Post by leduke »

Thank you for answering. So for the first job, the backup windows will not be enought to perform a full backup, but for incrmental backup, the backup can be performed during the backup windows.

Thank you.
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