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#1 2021-07-30 09:53:03

michib
Member
Registered: 2020-02-02
Posts: 15

XSIBackup-DC: Is restoring differentially supported?

Hi,

I need to restore every week a certain number of VMs from our XSI backup repository to a dedicated drive where we sync that VMs data to an offsite disaster recovery space. When I restore and the target destination is non empty I see that XSI-DC always zeroes destination files. Is there a way / is supported to modify them differentially instead of creating then form scratch?


thanks,
best regards,

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#2 2021-07-30 14:19:47

admin
Administrator
Registered: 2017-04-21
Posts: 1,778

Re: XSIBackup-DC: Is restoring differentially supported?

No, there isn't.
Use a replica and upload the replica or upload the repository instead of the rebuilt VMs.

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#3 2021-07-30 14:25:20

michib
Member
Registered: 2020-02-02
Posts: 15

Re: XSIBackup-DC: Is restoring differentially supported?

Thanks, I would like to retain the ability to have old versions while not having to buy TBs offsite and contain offsite sync times.

I saw you also give possibility to inspect repository as a filesystem with xsifs. Maybe using rsync with it could it be an option? I'm currently working on a Sinology NAS but I could mount the repo on an external linux for this purpose. How are performances on xsifs?

thanks, regards,

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#4 2021-07-30 14:50:34

admin
Administrator
Registered: 2017-04-21
Posts: 1,778

Re: XSIBackup-DC: Is restoring differentially supported?

The best way to save in offsite storage is to upload the deduplicated repository using Rsync. Turn the Rsync flags to avoid a full cheksum and only compare by size and date and you will have an extremely fast sync to the offsite server while keeping a compression ratio close to 99%, thus 1TB could easily host some 90TB of real data.

We don't know what type of OS you are using as the offsite backend, a Linux distro would be the perfect match though, we still recommend CentOS/ RHEL 7

XSIFS performance depends on the resources you have. You should be able to make it work over NFS with a more than decent throughput for big files: 20-30MB/s, that's what we get on commodity hardware. Using SSD would drastically improve that.

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#5 2021-09-13 13:35:09

zakareya
Member
Registered: 2021-09-13
Posts: 1

Re: XSIBackup-DC: Is restoring differentially supported?

What is the script to do restore VM?

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#6 2021-09-14 11:00:59

admin
Administrator
Registered: 2017-04-21
Posts: 1,778

Re: XSIBackup-DC: Is restoring differentially supported?

There isn't any restore script, but a restore command. It is described in the manual.

./xsibackup --restore /path/to/backup/repository/20210913202034/MyVM /vmfs/volumes/datastore1/MyVM

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