-
- Enthusiast
- Posts: 71
- Liked: 2 times
- Joined: Jul 25, 2009 12:14 am
- Contact:
DisableVddkNetworkOutput @ VMworld 2012 EMEA
Hi folks,
During the session "SPO3292 - Veeam Backup & Replication: Tips and Tricks" Anton Gostev told about the DisableVddkNetworkOutput registry trick that may save up to 5min per job. The room was really full and for the people in the back (like me), it was hard to hear everything clearly. Can someone from the veeam team give us some details about what this setting is doing and why it could same time on jobs ?
Thanks for this great session Anton !
Regards
During the session "SPO3292 - Veeam Backup & Replication: Tips and Tricks" Anton Gostev told about the DisableVddkNetworkOutput registry trick that may save up to 5min per job. The room was really full and for the people in the back (like me), it was hard to hear everything clearly. Can someone from the veeam team give us some details about what this setting is doing and why it could same time on jobs ?
Thanks for this great session Anton !
Regards
-
- Chief Product Officer
- Posts: 31804
- Liked: 7298 times
- Joined: Jan 01, 2006 1:01 am
- Location: Baar, Switzerland
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Hi Ralf,
Actually up to 5 minutes per each VM in the job, not just 5 minutes per job.
This settings disables VDDK (VMware vStorage API) logging, which we do without buffering to ensure sure the data is captured even if the data mover process crashes, and thus it may take a while in large environments with a lot of LUNs.
We have reduced the amount of logging in 6.5 to the bare minimum, but previous product versions can write a lot of logs, which slows down VDDK disk open operation significantly.
Remember to apply this only in stable environments, because this will reduce your supportability dramatically. Meaning, with certain issues you would have to re-create support log package with this registry key disabled if our support requests.
Thanks!
Actually up to 5 minutes per each VM in the job, not just 5 minutes per job.
This settings disables VDDK (VMware vStorage API) logging, which we do without buffering to ensure sure the data is captured even if the data mover process crashes, and thus it may take a while in large environments with a lot of LUNs.
We have reduced the amount of logging in 6.5 to the bare minimum, but previous product versions can write a lot of logs, which slows down VDDK disk open operation significantly.
Remember to apply this only in stable environments, because this will reduce your supportability dramatically. Meaning, with certain issues you would have to re-create support log package with this registry key disabled if our support requests.
Thanks!
-
- Lurker
- Posts: 1
- Liked: never
- Joined: Jul 08, 2009 9:30 pm
- Full Name: Bertrand CHAMPENOIS
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Thanks Anton, but what is exactly the tip?
Where can we add/modify this registry entry?
"takes a while in large environments with a lot of LUNs": do you mean it's unnecessary on a Veeam server proceeding only 30 VMs a night...?
Best regards
Where can we add/modify this registry entry?
"takes a while in large environments with a lot of LUNs": do you mean it's unnecessary on a Veeam server proceeding only 30 VMs a night...?
Best regards
-
- Chief Product Officer
- Posts: 31804
- Liked: 7298 times
- Joined: Jan 01, 2006 1:01 am
- Location: Baar, Switzerland
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
We only have a single hive for all registry hacks on Veeam management server, it is easily identifiable by just browsing the registry (and it already has some existing values, so you should have no problems finding one). Sorry I don't have a Veeam server handy right now.
It will have positive impact on environments of any size, just don't expect it to be 5 minutes if you only have a handful of LUNs.
It will have positive impact on environments of any size, just don't expect it to be 5 minutes if you only have a handful of LUNs.
-
- Veteran
- Posts: 295
- Liked: 59 times
- Joined: Sep 06, 2011 8:45 am
- Full Name: Haris Cokovic
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
It's located under HKLM\SOFTWARE\VeeaM\Veeam Backup and Replication
-
- Enthusiast
- Posts: 71
- Liked: 2 times
- Joined: Jul 25, 2009 12:14 am
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Thanks Anton, i'll give a try asap
So the setting may still be usefull in 6.5 for jobs with a lot of vm ?Gostev wrote:We have reduced the amount of logging in 6.5 to the bare minimum, but previous product versions can write a lot of logs, which slows down VDDK disk open operation significantly.
-
- Chief Product Officer
- Posts: 31804
- Liked: 7298 times
- Joined: Jan 01, 2006 1:01 am
- Location: Baar, Switzerland
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Yes, but to a less extent, because 6.5 by itself filters out 90% of VDDK output that previous versions would dump to the log file, slowing things down.
-
- Service Provider
- Posts: 96
- Liked: 9 times
- Joined: Sep 01, 2010 11:36 pm
- Full Name: Bernard Tyers
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Gostev.....Mate..
Any chance you can make the Presentation Available via the Veeam Website? Seems as though your presentation is for "Paid Attendees" only on the VMworld Website.
Thanks VMware.
Bernie.
Any chance you can make the Presentation Available via the Veeam Website? Seems as though your presentation is for "Paid Attendees" only on the VMworld Website.
Thanks VMware.
Bernie.
-
- VP, Product Management
- Posts: 27371
- Liked: 2799 times
- Joined: Mar 30, 2009 9:13 am
- Full Name: Vitaliy Safarov
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Hi Bernard, we have just asked our marketing team to publish this presentation on the Veeam website. Anton or I will update this topic once this presentation becomes available for download.
-
- Chief Product Officer
- Posts: 31804
- Liked: 7298 times
- Joined: Jan 01, 2006 1:01 am
- Location: Baar, Switzerland
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
Just wanted to update that as of 6.5, the above key is obsolete. Instead, if you want to completely disable VDDK logging, you should create VDDKLogLevel (DWORD) value, and set to 0.
However, this will no longer provide significant impact in most environments, because the default logging level has been already reduced tremendously in 6.5. Nevertheless, I know of at least one customer who chose to use this value since some of the backup proxy servers they use have as many as 350 LUNs mounted, so even minimal logging adds up quickly.
However, this will no longer provide significant impact in most environments, because the default logging level has been already reduced tremendously in 6.5. Nevertheless, I know of at least one customer who chose to use this value since some of the backup proxy servers they use have as many as 350 LUNs mounted, so even minimal logging adds up quickly.
-
- VP, Product Management
- Posts: 27371
- Liked: 2799 times
- Joined: Mar 30, 2009 9:13 am
- Full Name: Vitaliy Safarov
- Contact:
Re: DisableVddkNetworkOutput @ VMworld 2012 EMEA
And here is the link to Anton's full presentation:
http://go.veeam.com/vmworld-barcelona-2 ... ts-en.html
http://go.veeam.com/vmworld-barcelona-2 ... ts-en.html
Who is online
Users browsing this forum: Google [Bot], mikeely and 58 guests