Office 365 Backup Reccomendations

Last post 05-11-2018, 3:19 PM by Remala. 1 replies.
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  • Office 365 Backup Reccomendations
    Posted: 05-11-2018, 11:26 AM

    Hello all,


    we need to perform a local backup of about 300 mailboxes located on Office 365.

    Right now we have added only 50 mailboxes but performances are not so good (approx 3GB/h) and subclient archive job completes everytime in about 6-7 days and always have at least 15 failed mailboxes, which are not always the same ones.

    This is our actual configuration:
    2 Online Proxy w Outlook installed
    1 Index Server
    4 MA w Partitioned DDB
    1 Shared NFS Disk Library

    What really confues me is that every time the subclient backup starts, it looks like it is performing a FULL backup of the mailboxes as the total ammount of data in Application Size is approx the same as the total size of these 50 mailboxes.

    We have already worked with support with case 180315-230 but it was closed without providing a real solution.

    Does anyone have any suggestion for us?

    Thank you and best reagards,


  • Re: Office 365 Backup Reccomendations
    Posted: 05-11-2018, 3:19 PM


    I was going through the support ticket which got closed.

    as per support notes, the issue was related to network and after implementing a one-way firewall backups are better.

    if you think still the issue hasn't resolved fully, please re-open the support ticket.

    we will work through support.


    in general, your environment configuration seems to be good enough.

    throughput low could be because of the reason which you mentioned always backing up as full.

    again we need to check the issue why it is treating as full.













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