• EN
Solved

Significant increase in incremental backup size (Microsoft 365)

E
Userlevel 3
  • EMcS
  • Comes here often
  • 6 comments

As of the 27th March we have seen a significant increase in incremental backup size for our Microsoft 365 backup… Peaking at 800GB+ on the 31st! 

We have different jobs configured for different sources, for example we have separate jobs for:

  • User Mailboxes
  • Shared Mailboxes
  • SharePoint Sites
  • OneDrive Sites

Looking at the size of each backup job, I think the increase in backup size is primarily due to the user mailbox jobs; the other jobs look ‘normal’ in terms of their size. 

  1. Is anyone else seeing a sudden increase in backup size in the last couple of weeks? 
  2. Does anyone have any tips for pinpointing where the increase is coming from? 
icon

Best answer by Stabz 3 April 2024, 17:18

View original

8 comments

Stabz
Userlevel 7
Badge +7

Hey,
One of my customer just report me this problem, after a research, there is a kb for this https://www.veeam.com/kb4483

The problem is on the MS side 😕

Philippe DUPUIS |Veeam Certified Engineer | https://original-network.com/
E
Userlevel 3

Hey,
One of my customer just report me this problem, after a research, there is a kb for this https://www.veeam.com/kb4483

The problem is on the MS side 😕

Thanks - this looks like it could be the cause! When did your customer first see the increase? 

kristofpoppe
Userlevel 6
Badge +8

We also see this on multiple tenants. Especially last week.

Cherriis VBO management platform images

 

Fan since FastSCP | VMCA-1 | VMCE9 | VMCE2022 | VMCA2024
Stabz
Userlevel 7
Badge +7

Hey,
One of my customer just report me this problem, after a research, there is a kb for this https://www.veeam.com/kb4483

The problem is on the MS side 😕

Thanks - this looks like it could be the cause! When did your customer first see the increase? 

Since last week like you, 26-27 March

Philippe DUPUIS |Veeam Certified Engineer | https://original-network.com/
dloseke
Userlevel 7
Badge +6

I’m seeing an increase as well, but I’m also having issues viewing my buckets in Wasabi (possibly outage-type issue, I have a case open), but looking at my overall dashboard, I see an increase in my consumption over the past month as well.  However, this graph isn’t nearly as dramatic as what you’re seeing because most of my data is in VBR buckets and not for VB365 so may really temper the overall growth.  I’m guessing once I can view my individual buckets it may be more telling.

 

Derek M. Loseke, Senior Systems Engineer | Veeam Legend 2022-2023 | VMSP/VMTSP | VCP6-DCV | VSP/VTSP | CCNA | https://technotesanddadjokes.com | @dloseke
E
Userlevel 3

I’m seeing an increase as well, but I’m also having issues viewing my buckets in Wasabi (possibly outage-type issue, I have a case open), but looking at my overall dashboard, I see an increase in my consumption over the past month as well.  However, this graph isn’t nearly as dramatic as what you’re seeing because most of my data is in VBR buckets and not for VB365 so may really temper the overall growth.  I’m guessing once I can view my individual buckets it may be more telling.

 

Rather than checking the utilisation from the Wasabi bucket side, you could do the storage consumption report from Veeam - this is where my graphs are from 😀

dloseke
Userlevel 7
Badge +6

Well, that was my next stop, but I do some reporting on my bucket sizes at the beginning of the month, so that’s where i had started anyway.  :-)  Also, support got back to me and I might have something blocking internally...so the hunt begins.

Derek M. Loseke, Senior Systems Engineer | Veeam Legend 2022-2023 | VMSP/VMTSP | VCP6-DCV | VSP/VTSP | CCNA | https://technotesanddadjokes.com | @dloseke
E
Userlevel 3

Update: 

Our incremental backups still appear to be significantly larger and therefore this does not appear to be the same behaviour as documented in https://www.veeam.com/kb4483
 

 

Comment


Terms & Conditions