2011-09-12 11:36 PM
I have a question about the following scenario
Question is now how I have to configure this within Protection Manager?
Is this the correct way to get it done or are there some others things which I should take care of?
Thanks a lot
2011-09-13 12:18 AM
When you use Protection manager to do the work, it is recommended to let PM do the provisioning of the destination volume(s).
But... You have 2 options...
1. create the snapvault relationship on the CLI and then import it. This will give you the "full control" over the destination volume to be used.
2. Let Protection Manager provision the destination volume(s). Here you should make a copy of the backup policy you want to work with and then relate it to the provisioning policy and the schedule you want to use.
Hope this helps,
2011-09-13 10:11 AM
There's a third approach to Peter's two.
Create an empty dataset and apply your backup protection policy.
Add your large secondary volume to the Backup node.
Add your primary qtrees to the Primary node.
I think this is pretty much what you suggested. You have to do it in this order (backup volume first) because otherwise, when you add the primary qtrees, we'll immediately try to create a new secondary volume.
You need to ensure the option "dpMaxFanInRatio" is increased from it's default value of 1. This controls how many source volumes we allow to be backed up to a single secondary volume. You change it from the CLI:
$ dfm option set dpMaxFanInRatio=4 (or whatever value you need, 4 to 8 are good values.)
2011-09-14 02:43 AM
Thanks for your comments.
I used nr 1 which is working fine now.
Also tried now to add an additional QTree to the Physical Resoures list using ProtectionManager. But I got a message that I have to create a new flx vol with the size of the source vol + 40GB. That's really funny. So to add new source qtrees I do it on the cli with snapvault -s source filer:qtree destination filer:qtree. After some time it's listed in ProtectionManager as external relationship and can then be imported. A little complicated but it works.
Thanks as well. Will try our way, too. Does I got you right that it's a must to change the "dpMaxFanInRatio" value? Take in mind that I want to have source qtrees from different vols/aggres and maybe filers snapvaulted to a single destiantion volume on our backup filer.
2011-09-14 04:30 AM
the maxfaninratio is controlling the behavior of Protection Manager. From the message you mentioned I assume it is set to 1 right now. Just take smoots advice and put it to a number you need it.
If you set it to 4, this means that Protection Manager will allow you to add up to 4 qtrees to be snapvaulted into one destination volume.
2011-09-14 08:16 AM
Peter, you're close but not exactly correct. Setting dpMaxFanInRatio to 4 means data from four source volumes can be backed up to a single secondary volume. The number of qtrees is a separate issue.
There is a second setting, dpMaxSvRelsPerSecondaryVol, which controls how many qtrees, from however many primary volumes, we'll back up to a single secondary volume (there are corresponding dpMaxQsmRelsPerSecondaryVol and dpOSSVDirMaxSvRelsPerSecondaryVol). The default values for these are in the 50-100 range but I don't recall the actual values right now.
If you exceed either of these limits, Protection Manager will attempt to select or provision a new secondary volume.
2011-09-16 01:09 AM
The default value for all the MaxRel options is 50.Also there are other situation when we create a new volume.
For others adding what I know based on my experience.
So even if you have a Fan-In ration of 4 it happens only when the following conditions are satisfied
By this you will end up with 4 secondary volume to backup qtree coming from 4 primary volumes inspite of fan-in being 4.
Hope this helps.
2011-10-18 05:45 PM
I'm having an issue with my OSSV setup with protection manager. I need to setup up 5 OSSV clients into one dataset but create different volumes for each OSSV. Currently its provisoning 1 Volume per dataset and adding qtrees to this volume for each client.
my FAN-IN ratio is set to 1, but I've read this options doesn't apply to OSSV. The other options mentioned above dpMaxSvRelsPerSecondaryVol, dpMaxQsmRelsPerSecondaryVol, dpOSSVDirMaxSvRelsPerSecondaryVol I can't fine inf DFM.
My DFM version 5.0.
Thanks in advance.
2011-10-19 04:39 AM
If you want to control one volume per OSSV host. Then you should add one OSSV host at a time to the dataset and set the dpOSSVDirMaxSvRelsPerSecondaryVol to nubmer of drives or mount points that you are backing up.
so the example, if you have 5 ossv host with each one having 1 2 3 4 and 5 drives.
And so on.
2011-10-19 03:11 PM
Thanks for the fast reply. where do I set the dpOSSVDirMaxSvRelsPerSecondaryVol option. I've searched for the command in DFM but can't find any reference and also on the NOW site.