> Op 21 okt. 2015, om 04:47 heeft Tian Miao Liu <tianmiao AT CN.IBM DOT COM> 
> het volgende geschreven:
> 
> Hi, Remco:
> 
>       The perform doesn't sounds right. What is your TSM server version?

Hi Tian,


we’re at 7.1.1.100 and about to upgrade to version 7.1.1.300 (due this Monday 
for this server). TDP is version 7.1.2.0, as is the BA client. 

> The issue you described is similiar to APAR IC86558, can you check if your
> TSM server has been updated with recent hotfix?
> 
> IC86558: TIVOLI STORAGE MANAGER SERVER NEEDS TO MUCH TIME TO RESPOND ON
> QUERIES FROM DATA PROTECTION FOR EXCHANGE.
> http://www-01.ibm.com/support/docview.wss?uid=swg1IC86558
> 

which should not apply to us, given the version we’re at. Unless you have 
reasons to believe otherwise?

> 
> 
>       Regarding your question about multiple DAG NODE, Here are several
> suggestions that for your consideration:
> 
> 1. A single DAG node has the benefit to share backup data for all Exchange
> servers. For example, any Exchange server in the DAG can see backups from
> other servers, and it can perform restore operation using backups from
> other servers.
> 
> 2. A single DAG node can also share mailbox history information for all
> Exchange servers. In mailbox restore operations, user can operate on all
> the mailboxes in the DAG from any Exchange server in the DAG.
> 
> 3. If customer's Exchange servers are separated into different groups
> (e.g. some servers are in city_A, other servers are in city_B. DAG copies
> of the same database only reside in the same city. And city_A and city_B
> does not need to share backup data.), then it's ok to use different DAG
> nodes for the different groups of servers.
> 
> 4. After changing the DAG node, if you want to restore an old backup, you
> need to change back to the old DAG node to view the old backup and restore
> it.
> 

Thanks for your input.

> 
> Best regards.
> Tian Miao Liu

-- 

 Met vriendelijke groeten/Kind Regards,

Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622