Discussions specific to the VMware vSphere hypervisor
Post Reply
dgatta
Influencer
Posts: 16
Liked: never
Joined: Oct 24, 2011 1:33 pm
Full Name: Davide Gatta
Contact:

same amount of data Read /size

Post by dgatta » Mar 25, 2014 4:52 pm

Hello Sirs

Here is the report of a succesfull backup job
I ask: why for one server (the one in bold) the amount of data read is equal to the size of the VM, while this is not for the others?
which parameter must be set / adjusted?

thanks for your support

Status Start time End time Size Read Transferred Duration
Success 21:01:50 21:21:34 465,8 GB 7,1 GB 1,4 GB 0:19:44
Success 21:01:52 21:20:00 232,8 GB 8,6 GB 5,8 GB 0:18:07
Success 21:39:47 23:03:26 310,0 GB 309,3 GB 4,1 GB 1:23:39
Success 21:33:40 21:39:43 232,8 GB 3,2 GB 1,1 GB 0:06:03
Success 21:19:10 21:23:33 125,0 GB 1,3 GB 215,2 MB 0:04:23
Success 21:20:52 21:33:36 460,0 GB 8,7 GB 1,8 GB 0:12:43

Gostev
SVP, Product Management
Posts: 24812
Liked: 3572 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Re: same amount of data Read /size

Post by Gostev » Mar 25, 2014 6:39 pm

Hello, Davide. Most likely, the backup job detected that CBT data on the given VM was invalid, and failed over to reading the entire virtual disk to determine changes. The following passes should start using CBT again. Thanks!

foggy
Veeam Software
Posts: 18287
Liked: 1568 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: same amount of data Read /size

Post by foggy » Mar 25, 2014 7:49 pm


dgatta
Influencer
Posts: 16
Liked: never
Joined: Oct 24, 2011 1:33 pm
Full Name: Davide Gatta
Contact:

Re: same amount of data Read /size

Post by dgatta » Mar 28, 2014 11:01 am

the vm with the issue is the VM where B&R is installed onto.
It is also the Proxy based on automatic setting.
will try to change to network mode instead of hot-add

BTW this is trange: with 6.5 version, I never seen this....

thanks

foggy
Veeam Software
Posts: 18287
Liked: 1568 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: same amount of data Read /size

Post by foggy » Mar 28, 2014 11:08 am

dgatta wrote:will try to change to network mode instead of hot-add
This can affect performance of other VMs backup.
dgatta wrote:BTW this is trange: with 6.5 version, I never seen this....
This behavior was the same with previous version, so probably configuration was different.

dgatta
Influencer
Posts: 16
Liked: never
Joined: Oct 24, 2011 1:33 pm
Full Name: Davide Gatta
Contact:

Re: same amount of data Read /size

Post by dgatta » Apr 03, 2014 3:48 pm

I have changed to network mode.
performance of other server are not too much penalised but:
same behaviour from the "problematic" machine (almost the tola size of HD are read)

why?

veremin
Product Manager
Posts: 16906
Liked: 1440 times
Joined: Oct 26, 2012 3:28 pm
Full Name: Vladimir Eremin
Contact:

Re: same amount of data Read /size

Post by veremin » Apr 03, 2014 3:50 pm

After switching to network mode have you tried to enable CBT on the said machine manually? Thanks.

Post Reply

Who is online

Users browsing this forum: No registered users and 29 guests