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How to Transfer Data from DLT Tape to LTO Tape

Created: 02 Nov 2005 • Updated: 21 May 2010 | 6 comments

Hi,

My company recently purchased a LTO Tape Drive (HP MSL 6000). According to what a vertias rep told us, we can transfer data from our old DLT tapes to the new LTO tapes using veritas backup exec. My question is, is this really possible? And if so, how would we go about doing this? There are approxiately 50 DLT tapes we would want to transfer. Note: All the data on the DLT tapes were created using Veritas Backup Exec 9.0 and 9.1 (the last 6 months we used 9.1). The server that has the DLT drive on it is running 9.1 and Windows 2000 Advanced Server. The server that is running the new LTO Drive is Windows 2003 Standard with Veritas Backup Exec. 9.1. I hope someone can help us out. If Veritas isn't the answer, does anyone know of a good alternative?

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Ken Putnam's picture

Shut down BackupExec on both servers.

Hook the old drive up to the new server and add it to BackupExec

Copy all of the *.U01 files from the old server's \Catalogs directory to that of the new server

See http://seer.support.veritas.com/docs/272886.htm
to force the new server to re-index the catalog

Then create a Duplicate Job for each DLT tape with the LTO drive as the target

When this finishes, you can restore data directly from the LTO drive, even tho it was backed up on the DLT drive.

If this response answers your concern, please mark it as a "solution"

Jason Whitehouse's picture

Thanks for th reply. I have a question regarding your answer. When you said "Then create a Duplicate Job for each DLT tape with the LTO drive as the target

When this finishes, you can restore data directly from the LTO drive, even tho it was backed up on the DLT drive. "

How will this work exactly. I don't entirely understand.

Ken Putnam's picture

A "Duplicate" type job will create a Logical Copy of the source backup set(s) on the new media. You can use it to copy data from disk backups to tape, or in your case from one tape format to another

By duplicating the backup sets, Backup Exec can then restore directly from the new media without having to jump through any additional hoops. If you just backup the B2D BKF files with a flat file backup, for example, you have to restore the BKF files before you can then restore data to disk

Did that help?

If this response answers your concern, please mark it as a "solution"

Jason Whitehouse's picture

I think so. Once we have created the duplicate jobs and have re-indexed the catalogs, and we want to start copying files from the DLT tapes to LTO, do we still need the DLT tapes to restore the information to the LTO tapes? Or is that what the catalogs are doing? When we go to restore, how do we tell Veritas to restore to the LTO Drive? Will that be once of our options in the restore Wizard once we hook up the DLT tape drive? Sorry for so many questions, I just want to make sure I understand this completely.

Ken Putnam's picture

The catalogs just tell you (and BackupExec) what data is on what media. You still need to mount the DLT tapes in order to Duplicate the backed up data to the LTO tapes.

If you have used a different tape naming convention for DLT and LTO tapes, you can tell what media a specific backup is on.

If you keep the DLT drive around and connected to the new server (if you do) you really would not need to Duplicate to LTO tapes.

If this response answers your concern, please mark it as a "solution"

Jason Whitehouse's picture

ok, cool. I got it. Just an FYI, we will be getting rid of the DLT drive. That's why it's so important to transfer the data.... :) thanks for your help.