B2D and Duplicates

[ToxicMyst]

Hi, Hope someone can help me with this.

I use B2D to backup several servers to a centeral BEW11 box (4tb of disk). This has a single drive autloader tape system attached to it too (LTO3).
I want to be able to do backup all servers to disk and have a retention period of 30 days for the disk based backups and duplicate this data to tape and have a retention period of 60 days.

What I dont want to happen is have the jobs basically run twice and drag the data from the source server once to disk and the second job stream to tape. What is the best way of doing this if any?

Thanks for any advice.

 

[steveot]

Yes a duplicate job. You can create a policy and create a backup template and duplicate template. Or create a backup job - to disk. Then create a duplicate to run right after the disk job to tape. If you cant run the dupe to tape right after the disk job then you will have to use a policy and delay the duplcate. You will need two media sets one for disk with overwrite protection set to 30 days and one for tape with op set for 60. Target the backup to disk job to 30 day media set and tapes to 60 day media set.

 

[ToxicMyst]

Thanks for the quick response.Now I know that I am heading in the right direction.
What I want to try and avoid, and I'm not sure if this is actually possible using the duplicate method, is dragging the data from the source server across the network twice.

If I use the duplicate option, where will it pull the data from?

Thanks for the help.

 

[steveot]

I dont understand. You have a media server that you have attached a 4TB array to or a SAN resource. Your running a bakcup to disk...this will pull the data from your remote agent server and put it on a local disk on the media server. You then run the duplicate from disk to tape which is going to pull the backup to disk media to tape.

 

[ToxicMyst]

Thanks for that. I now understand that the system knows which files it has written to disk fropm the remote server and then duplicates these files from the local disk on the BE server to tape.

If I am wrong please correct me.

Thanks again for the clarification.

 

[mofusjtf]

I have not been happy with Veritas/Symantec and how it handles B2D or Removeable B2D. Good luck.

One think to keep in mind is the fragmentation of the SAN. It will get heavily fragmented very quickly.

 

[DTracy]

You must remember that duplication is a policy procedure as steveo has written. Study the policy procedure and how to implement this, then when is is setup, it will do the backup and the duplication for you. Duplication is done in sets that are defined by policy. You are only dragging the data across the lan once, this is for the initial backup to disk on the media server. Duplication is accomplished through a direct connection of your media server with your tape library and can be done concurrently with the backup operation.