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What is being backed up when you backup a solution instance in SAP CAL?

Oct 28, 2017 at 11:36 AM

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Hello,

We have an S/4HANA 1610 Fully-Activated Appliance in CAL (on AWS) and we tried backing up the solution instance thrice.

1st time on October 18: Backup took 30 minutes to complete

2nd time on October 28: Backup took 15 minutes to complete

We then deleted this 2nd backup instance and ran it again.

3rd time on October 28: Backup took 1 minute to complete

We just wanted to know why the backup elapse time is decreasing. Is what's being backed up just the delta from the last backup instance?

Another question is are all servers within that instance being backed up? The S/4HANA Fully-activated Appliance is composed of 4 servers: For NW AS, Java AS, BI and Windows RDP.

Does backing up the instance mean the configurations made in the S/4HANA system are saved and can be restored at a later times should data loss happen?

Thank you.

Michael

aws | cal
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Former Member
Oct 30, 2017 at 09:28 AM
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Hello Michael,
The backup for solution instances on AWS (no matter the solution) is achieved by creating snapshots for all the volumes.
So for the first question, yes the data that is being backed up is just the delta from the last backup, that`s why the backup time is decreasing.

All of the servers within the instance are being backed up, and yes the configurations made in the S/4HANA are saved and can be restored.

Regards,
Daniel

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Hi Daniel,

Thanks for your answer. This helps. So since I deleted the 2nd backup instance before I ran another 3rd backup instance, does this mean I have lost the delta between the 1st & 2nd backup instances? When I ran it the 3rd time when the 2nd backup is already deleted, it only took 1 minute to finish.

Regards,

Michael

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Hi Michael,

Your question is related to how the snapshot creation works in AWS. Therefore I'd recommend to search the AWS documentation. I'd start from http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-creating-snapshot.html

Best regards,

Stanimir

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Thanks a lot for this. The document answered my last question

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