Comprehensive data protection for all workloads
Post Reply
sigmaos
Influencer
Posts: 20
Liked: 3 times
Joined: Jun 20, 2011 2:23 pm
Contact:

Volume data veeam

Post by sigmaos » May 20, 2013 8:00 am

Hello,

A customer asked me an interesting question and i think I haven't given all the answers.

- Why do some veeam backups have a volume of several GB while the data have hardly changed on the server ... ? While on the same backup using Backup Exec, backup files are only a few MB
I know that as Veeam works in block mode and so there is more data to be transferred in a backup.

Thank you in advance.

Sig'

Gostev
SVP, Product Management
Posts: 24804
Liked: 3566 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Re: Volume data veeam

Post by Gostev » May 20, 2013 8:07 am

Your answer is correct and complete. There are also many scenarios when the results will be opposite (large files).

sigmaos
Influencer
Posts: 20
Liked: 3 times
Joined: Jun 20, 2011 2:23 pm
Contact:

Re: Volume data veeam

Post by sigmaos » May 20, 2013 8:11 am

How to explain the difference to the client with Backup Exec?
Because for a similar volume, the Backup Exec job is only a few MB and takes a few minutes ...

Thank you.

veremin
Product Manager
Posts: 16901
Liked: 1438 times
Joined: Oct 26, 2012 3:28 pm
Full Name: Vladimir Eremin
Contact:

Re: Volume data veeam

Post by veremin » May 20, 2013 8:17 am

A couple of question that are likely to shed a little bit more light on the said situation:

1. Is it full or incremental backup run (Veeam)?
2. What is the type of VMs that are backed up? Are they just a simple VMs or VMs running specific applications like SQL, Exchange Server etc.?
3. What backup method is being used in Backup Exec– image-based or file-level one?

Thanks.

sigmaos
Influencer
Posts: 20
Liked: 3 times
Joined: Jun 20, 2011 2:23 pm
Contact:

Re: Volume data veeam

Post by sigmaos » May 20, 2013 8:27 am

v.Eremin wrote:A couple of question that are likely to shed a little bit more light on the said situation:

1. Is it full or incremental backup run (Veeam)?
2. What is the type of VMs that are backed up? Are they just a simple VMs or VMs running specific applications like SQL, Exchange Server etc.?
3. What backup method is being used in Backup Exec– image-based or file-level one?

Thanks.
Answer :
1. Its Reversed Incremental
2. 90% its simple VMs and other its Exchange/SQL/...
3. I dont know actually, its juste BESR incremental

SCREENSHOT ----> http://imageshack.us/photo/my-images/84 ... reoak.png/

Thks.

Sig'

veremin
Product Manager
Posts: 16901
Liked: 1438 times
Joined: Oct 26, 2012 3:28 pm
Full Name: Vladimir Eremin
Contact:

Re: Volume data veeam

Post by veremin » May 20, 2013 8:56 am

other its Exchange/SQL/
The VMs running special Windows applications are notoriously known of producing high change rates.
How to explain the difference to the client with Backup Exec?
The reason of such behaviour is in the way to products work. Symantec is a file-level solution that requires an agent to be installed inside VM and that keeps track about changed files, meanwhile, VB&R is an image-based one, that cares only about blocks.

And changed blocks are not necessarily related to files – some activities such as defragmentation, as well as, antivirus one that don’t literally change files, does affect seriously the number of changed block and so on.

Thanks.

sigmaos
Influencer
Posts: 20
Liked: 3 times
Joined: Jun 20, 2011 2:23 pm
Contact:

Re: Volume data veeam

Post by sigmaos » May 20, 2013 9:04 am

I totally agree with you, but how to explain to the customer that the time is faster with a "file-level solution" (BAckup Exec) ?
It's optimized with Veeam and options are not the same ... But the customer want a justification... :o)

Thank you.

chrisdearden
Expert
Posts: 1530
Liked: 225 times
Joined: Jul 21, 2010 9:47 am
Full Name: Chris Dearden
Contact:

Re: Volume data veeam

Post by chrisdearden » May 20, 2013 9:43 am 3 people like this post

Simple - delete one of his VM's and ask him to rebuild it & restore data from backup exec. Then do a veeam instant restore.

Time taken during backup is irrelevent if it fits into your backup window. Take taken on restore is considerably more important.


note : please don't actually delete a customers VM :)

sigmaos
Influencer
Posts: 20
Liked: 3 times
Joined: Jun 20, 2011 2:23 pm
Contact:

Re: Volume data veeam

Post by sigmaos » May 20, 2013 9:46 am

chrisdearden wrote:Simple - delete one of his VM's and ask him to rebuild it & restore data from backup exec. Then do a veeam instant restore.

Time taken during backup is irrelevent if it fits into your backup window. Take taken on restore is considerably more important.


note : please don't actually delete a customers VM :)
AHAH ! :roll:

Thks for this answer. :wink:

Sig'

dellock6
Veeam Software
Posts: 5734
Liked: 1625 times
Joined: Jul 26, 2009 3:39 pm
Full Name: Luca Dell'Oca
Location: Varese, Italy
Contact:

Re: Volume data veeam

Post by dellock6 » May 20, 2013 11:26 am 2 people like this post

chrisdearden wrote:Time taken during backup is irrelevent if it fits into your backup window. Take taken on restore is considerably more important.
You should really change the name of the product to "Restore and Replication", I'm saying it from years. :)

Luca.
Luca Dell'Oca
Principal EMEA Cloud Architect @ Veeam Software

@dellock6
https://www.virtualtothecore.com/
vExpert 2011 -> 2019
Veeam VMCE #1

Post Reply

Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 18 guests