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DPM Online Backup to Azure Storage RRS feed

  • Question

  • Hi,

    I am testing DPM to store backup of on-premise machines to Azure storage. Everything is deployed and one test machine is getting backed up, however I have few below queries.

    1) From DPM Administrator console, I cannot see the usage of Online backup. Also, can we see the usage from Azure portal after we create recovery service vault ?

    2) As per the information on Microsoft website, we need 5% of reserved cache space for the data to be backed and while configuring I found that it should be only NTFS. What is the purpose of this ? Also, is this required on DPM server ?

    3) Also, online backup requires short term disk backup also configured before enabling online protection. This means backup consumes your on-premise storage also. If that's the case then what is the benefit.

    4) Restore also require free on-premise storage, which it basically frees up after the restore, however we need to make sure that we always have that much free space available. 

    Tuesday, February 4, 2020 1:45 PM

Answers

  • Hi,

    1) From DPM Administrator console, I cannot see the usage of Online backup. Also, can we see the usage from Azure portal after we create recovery service vault ?

    >> You can see how much disk usage is your Recovery Services Vault.

    2) As per the information on Microsoft website, we need 5% of reserved cache space for the data to be backed and while configuring I found that it should be only NTFS. What is the purpose of this ? Also, is this required on DPM server ?

    >> The cache location doesn't have to be on the DPM server. The size of the cache folder determines the amount of data that you are backing up. The cache folder volumes should have free space that equals at least 5-10% of the total size of backup data.

    3) Also, online backup requires short term disk backup also configured before enabling online protection. This means backup consumes your on-premise storage also. If that's the case then what is the benefit.

    >> Online protection is designed to be a long-term protection, it's kind of a replacement for tapes, you might use Online protection for archiving data.

    4) Restore also require free on-premise storage, which it basically frees up after the restore, however we need to make sure that we always have that much free space available.

    >> Depends on how you restore, but normally you would create a copy instead of overwriting or restoring to existing location, but yes in general you will require some free disk space to restore to.

    Best regards,
    Leon


    Blog: https://thesystemcenterblog.com LinkedIn:

    • Marked as answer by SC2317 Tuesday, February 4, 2020 9:53 PM
    Tuesday, February 4, 2020 2:28 PM

All replies

  • Hi,

    1) From DPM Administrator console, I cannot see the usage of Online backup. Also, can we see the usage from Azure portal after we create recovery service vault ?

    >> You can see how much disk usage is your Recovery Services Vault.

    2) As per the information on Microsoft website, we need 5% of reserved cache space for the data to be backed and while configuring I found that it should be only NTFS. What is the purpose of this ? Also, is this required on DPM server ?

    >> The cache location doesn't have to be on the DPM server. The size of the cache folder determines the amount of data that you are backing up. The cache folder volumes should have free space that equals at least 5-10% of the total size of backup data.

    3) Also, online backup requires short term disk backup also configured before enabling online protection. This means backup consumes your on-premise storage also. If that's the case then what is the benefit.

    >> Online protection is designed to be a long-term protection, it's kind of a replacement for tapes, you might use Online protection for archiving data.

    4) Restore also require free on-premise storage, which it basically frees up after the restore, however we need to make sure that we always have that much free space available.

    >> Depends on how you restore, but normally you would create a copy instead of overwriting or restoring to existing location, but yes in general you will require some free disk space to restore to.

    Best regards,
    Leon


    Blog: https://thesystemcenterblog.com LinkedIn:

    • Marked as answer by SC2317 Tuesday, February 4, 2020 9:53 PM
    Tuesday, February 4, 2020 2:28 PM
  • Hi Leon,

    Thanks I can see the usage on portal, however I cannot see it in DPM administrator console,  any idea about that ?

    I think 5% of cache space is required on each protected instance because this option is available when we install MARS agent on machine.

    Also, does free space for recovery needs to be available on DPM server or it can be on any other server ?

    Tuesday, February 4, 2020 2:49 PM
  • I don’t think you can see the disk space used for online protection in the DPM console.

    The free space for recovery doesn’t have to be on the DPM server.


    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 2:54 PM
  • While I was working for DPM backup report, one of the scripts fetched usage of online backup. I am not sure if it was querying DPM or online recovery vault, however if I am scheduling report from system that does not have internet connection then I'll never get usage of online backups.

    Could you please suggest some tweak if we can see the online storage usage on DPM console.

    Tuesday, February 4, 2020 3:07 PM
  • If you go to the Management tab and select on Online, you will see how much disk usage is being used in the cloud.

    DPM reports is always the best way to obtain this information.


    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 3:22 PM
  • Hi Leon,

    That's the thing, I cannot see any usage. It shows 0KB

    Tuesday, February 4, 2020 3:48 PM
  • Try re-registering your DPM to the existing Recovery Services Vault, also make sure you have the latest MARS agent: https://aka.ms/azurebackup_agent


    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 3:51 PM
  • My bad, I do have latest version installed. However, I had to exit and then open the DPM application to see it.

    As you mentioned that online backup is kind of replacement for tapes, then does configuring tape solution on azure makes sense ? Is yes, then how is it different from online backup. 

    Tuesday, February 4, 2020 4:02 PM
  • You cannot backup tape to Azure, it's either:

    - Disk & Tape protection.

    or

    - Disk & Online (Azure) protection.

    Move your long-term storage from tape to the Azure cloud
    https://docs.microsoft.com/en-us/azure/backup/backup-azure-backup-cloud-as-tape


    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 4:06 PM
  • Yes, so does this both are different ? Considering that configuring disk & online backup is straightaway and easy whereas Disk & Tape backup requires extra configuration, which solution is better .

    Also, does DPM support backing up mounted drives or network shares ?

    Tuesday, February 4, 2020 4:10 PM
  • Tape and Online are different yes, Online is a replacement for Tape backups, backing up to disk and online is much easier and recommended.

    DPM can back up shares, and mount points.

    Note about mount points:
    A protection group can contain data with mount points. In this case DPM protects the mounted volume that is the target of the mount point, but it doesn't protect the mount point metadata. When you recover data containing mount points, you'll need to manually recreate your mount point hierarchy.


    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 4:15 PM
  • Hi Leon,

    Thanks, can you please suggest if i have CIFS share exported from non-windows machines then how can I backup data using DPM and store backup online ?

    I have tried mounting that share as drive on one of the server, however DPM does not see that mounted drive while configuring backup.

    Tuesday, February 4, 2020 8:46 PM
  • DPM can only back up data that is hosted on Windows servers that support VSS Shadow Copies and has a DPM agent installed, so no it cannot back up CIFS shares.


    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 9:06 PM
  • Does that mean if I have mounted that CIFS share as drive on windows server with DPM agent installed then I cannot backup that via DPM ?
    Tuesday, February 4, 2020 9:28 PM
  • I'm afraid not.

    Blog: https://thesystemcenterblog.com LinkedIn:

    Tuesday, February 4, 2020 9:41 PM
  • That's sad because we have that requirement and most of the other backup solutions supports this. However, DPM still lacks it and I think Microsoft needs to add these kind of features to make DPM as enterprise backup software for on-premise servers with different configurations.

    Anyways, many thanks Leon for your help once again.

    Tuesday, February 4, 2020 9:52 PM
  • There's a feedback request for adding support for backing up CIFS / NAS shares, you can give your vote here:

    https://feedback.azure.com/forums/914488-system-center-data-protection-manager/suggestions/9396531-dpm-protecting-nas-cifs-shares


    Blog: https://thesystemcenterblog.com LinkedIn:

    Wednesday, February 5, 2020 2:24 PM
  • Thanks Leon, seems like this is 2 years old request and Microsoft does not seem to support/add this in DPM very soon.
    Friday, February 14, 2020 1:36 PM