Advantage and Disadvantages of using DRM method

[fadzlirot]

Can anyone help me list out the advantage and disadvantage of using the DRM on backup other than the TSM DB?

in my case the file retention is 90 days and 6GB in size.

Advantages
1. Tapes are move off-site so data are more secure in case on-site disaster
2.

Disadvantages
1. Increased number of tape usage (?)
2.


another question,
Is the DRM tape need to be scratch daily before DRM backup can start again

 

[marclant]

The advantage of DRM is that it automates some of the disaster recovery process, there is no real disadvantage. DRM doesn't use more tapes than if you manually make a backup of your storage pools to send offsite.

Sounds more like you are debating between the ability to be able to recover from a disaster or not. Here's the question you need to ask the owner or CEO of the company you work for: "If the building is destroyed, do you have a business requirement for recovering all the data we have in another site?" If he/she answers yes, then you need offsite copies. So for your offsite copies, you will need to backup the storage pools to a copy pool, and perform a database backup to a tape, and send those offsite. You can all do all these steps manually or use DRM to automate most of it.

So as you see, DRM doesn't use more tape, it's the decision of whether or not your organization needs offsite copies for business continuity that will determine if you need more tapes.

And yes the backup stgpool and db backup both need scratch tapes. You do get some scratch tapes back from offsite as older database backups expire and as data expire and you run offsite reclamation.