Subscribe

SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

[ Edited ]

Hi All,

 

Briefly my environment:

  > Exchange 2010 SP3 RU2, DAG

  > ONTAP 8.3

  > SnapDrive 7.1

  > SnapManager for Exchange 7.1

  > 2 Offices with a FAS2552 in both offices, SnapMirror relationship from source volumes at one site to the remote site.  additionally a Storage Shelf attached to the FAS2552 at one office, to which we configured SnapVault relationship for both offices

 

My issues is this:

 

For compliance reasons, I need to archive our Exchange data for 7years.   

 

I was told by an netapp Engineer who was workign on my case that SnapManager can only be setup with a SnapMirror destination OR a SnapVault destination, not both.  

 

If both cant be configured with SME, how do I manage an effective DR in case of site loss ie SnapMirror, whilst still maintaining the retention required through SnapVault

 

 

 

My only workable solution at present is to give priority to the Compiance requirement and configure SME with Snapvault.  This gives me a snapshot schedule of max 182 over 7 years (1st & 15th of every month.  Thus my DR solution is limited to the source volume snapshots and these bi-monthly SnapVault copies

 

However, one big problem in relation to retention is that SME only gives me the option for Hourly, Daily, Weekly, Monthly, or Unlimited.  There is no custom period (as far as i can see).  likely "unlimited" would be most appropriate for my 7-yr compliance requirements, however is there a way to truncate/delete snapvault snapshots after those 7 years? I dont want to be in a position in 7yrs time when i have to manually use Cli or System manager to delete Snapshots manually

 

Any thoughts?

 

 

Thanks

Ben

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

We have done something similar to a customer and the way we did it was to arrange a seperate snapvault setup, so use SME to backup and mirror, but then run some poweshell scrpts to trigger seperate snapvaults.

 

it's a little manual and possibly a bit of work with DFM would tidy it up, but it does work and maybe an option for you.

 

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?


paulstringfellow wrote:

We have done something similar to a customer and the way we did it was to arrange a seperate snapvault setup, so use SME to backup and mirror, but then run some poweshell scrpts to trigger seperate snapvaults.

 

it's a little manual and possibly a bit of work with DFM would tidy it up, but it does work and maybe an option for you.

 


thanks for the suggestion

 

i'm fairly new to netapp storage so just a question on that setup you implemented:  with regards to the snapvault copies, how does SME read/recover from those snapshots at a later date?

 

eg.

if 1 year down the track i get a compliance request to recover a mailbox/emails for a particular user, how would I use SME to recover that information given that SnapVault is not linked directly to SME?  would I need to use powershell to copy those SnapVault snapshots back to SnapMirror volume.  And if so, assuming SME can read those snapshots automatically once they have been copied (does SME just pick up on the naming convention of the snapshot filename?)

 

 

thanks

Ben



Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

hi Ben,

 

so the snapvault we setup sits outside of the SME jobs

 

SME runs the backups that mirror across to the DR site, we then schedule a scrip that does the SV jobs.

 

becuase of that they cannot be recovered from within SME, they are done with a SV recovery seperattely.

 

we then present that data to production and either use Exchange recovery tools, or more usually use single mailbox recovery to recover data from the vaulted database.

 

hope that makes sense.

 

regards

Paul.

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

Thanks Paul that makes sense then.

 

I'd very much appreciate it if you could share that script with me.  I'd like to implement this setup also

 

could you explain where the script was run from?

and assuming when you say the data is presented to production from snapvault, you mean as a lun via snapdrive also? 

 

 

cheers

Ben

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

SnapManager for Exchange 7.1, SnapDrive 7.1.1 and clustered Data ONTAP 8.3 support both SnapMirror and SnapVault replication from the same source, so there really isn't a need for a script.  Setting it up is actuall fairly easy, since we longer rely on DFM integration to achieve the vault relationships.

 

One thing to bring up in regards to SME 7.1 and Exchange 2010, SME 7.1 now requires Winodws Management Framework 4.0 and Exchange 2010 SP3 RU5 or higher.

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

That's interesting Andy, is this only supported with CDOT at the backend or does this work with 7mode as well, without the need for a DFM relationship.

 

 

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

It only works with cDOT.  Since you stated your ONTAP version is 8.3, and 8.3 is cDOT only, this should work fine.

 

If you have 7-mode system, you can indeed have both SnapMirror and SnapVault set up simultaneously, but it requires DFM to function.

 

I personally prefer the cDOT integration, as it is now much easier to set up. Smiley Happy

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

Hi Andy,

 

the netapp support engineer referred me to this big that he said shows that you cannot have both snapmirror and snapvault relationships to the same source:

http://mysupport.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=837026

 

his verbal explanation to me was that SME 'can't determine what destination to write to' if you have two relationships

 

when i configured both relationships, my SME backups would fail.  admitedly i dont WMF 4.0 or Exchange 2010 SP3 RU5 installed on my servers.  would this specifically cause the backup failures or is it a recommendation that both be the min required ?

 

thanks

Ben

Re: SnapManager for Exchange - Snapmirror or SnapVault. can't have both?

Hello, Ben.

 

The bug you linked is fixed in SnapDrive 7.1.1, which is currently available.

 

As far as the WMF and Exchange RUs are concernec, the versions i stated (WMF 4.0 and Exchange 2010 SP3 RU5) are absolutely required in order to use SME 7.1 and SDW 7.1.1.  These requirements have been vetted by both NetApp and Microsoft to ensure compatibility.

 

Without the proper minimum Windows/Exchange requirements, SME and SDW can act unpredictably and cause backup failures.  Additionally, having a version of SnapDrive without a fix for the BUG listed will cause the SM/SV step of the backup to fail, thus reporting the entire job as a failure.

 

After upgrading to all the needed versions (SDW 7.1.1, WMF 4.0, Exchange 2010 SP3 RU5 or higher), please let me know if you have any additional questions or problems.

 

Andy