Symantec Enterprise Vault Partitions

Hi Guys,

I have Enterprise Vault 9 setup for an Exchange 2010 DAG on VM's (Exchange and EV) and all is working well.  I was wondering what the best practices/recommendations of how to use partitions are when using tiered SAN storage. My understanding is that they are mainly for providing additional capacity at different locations, however in the event of running out of space more disks would be added to the SAN, so are there any issues with having one large open partition?

I have setup a dedicated RDM mapping for the drives hosting the data so these can be extended easily (unless anyone knows of issues with extending the storage for EV) so is there any considerations I am missing maybe in terms of backup, performance that I should be using partitions for?  Would I benefit from creating partitions so that this data is dynamically moved to the lower tiered storage? I'm a little confused as to what access is available once a partition is closed from the perspective of users, does this affect the way they can search etc or is it literally a logical storage divider?

Thanks in advance for your comments!
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Paul SolovyovskyConnect With a Mentor Senior IT AdvisorCommented:
I typically keep my vault store partitions between 500 to 700GB before vault store parition rollover as this keeps the DR windows within a reasonable range.  If you have larger partitions they'll grow and grow and if you have to perform a restore of so many small files it can take a lot longer to do so.  

In addition, keeping the vault store partitions smaller allows you to keep your backup windows smaller since after you rollover the original partition becomes read only.

Due to infrequent access of the data I usually encapusalate the data in a VMDK vs RDM as it gives me more flexibility, sometimes I create a 2TB VMWare datastore and divide into 3 to 4 vault store partitions for rollover and have done this with sites ranging from 50 to 15K users.
BatangarangAuthor Commented:
Thanks for your comments Paulsolov, sounds logical however two quick questions, how does retention affect these read only partitions and once you close a partition do you normally take a one-time stored backup of this partition?
Paul SolovyovskySenior IT AdvisorCommented:
From my understanding it will delete the emails that have a retention category past the deletion least that's what I've been told by support. Since I am consultant and come in for the initiall rollout I have not had the chance to wait long enough to actually see it being done.

The way I believe it's supposed to work is that you close a partition, it will still delete items with retention being set to delete.  If you restore the one time vault store partition, the next time expiry is ran it will delete the items I've said at least in theory, a call to EV support should clarify this.

BatangarangAuthor Commented:
Provided valuable guidelines/best practice advice
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