Netbackup NDMP direct copy ( VTL)

[demo4119]

Hi All

NDMP DirectCopy can operate in the following environments:

■ A NetBackup media server that is connected to a VTL that has access to a

physical tape library. The steps for configuringNDMPDirectCopy are described

in this chapter.

■ A NetBackup for the NDMP server that is connected to an NDMP host that has

access to a tape library (no VTL). ThisNDMPbackup environment is described

in other chapters of this guide. In this environment, no additional configuration

is required for NDMP DirectCopy .

If your NDMP host and storage devices are correctly configured, NetBackup

uses NDMP DirectCopy when you duplicate an NDMP backup that NetBackup

had created. 

Netbackup NDMP admin guide on page 59 is not clear.

It did mentioned that the media server need to access both VTL and Phyiscal library in order for the direct copy to work .

Can direct copy be configure as SLP policy using alternat read media server ?

[Marianne]

Have you seen the section a bit earlier in the manual?

(I'm looking at the NBU 7 version of NDMP Admin Guide http://www.symantec.com/docs/TECH127075)

 p. 27 covers this topic: NDMP direct copy with VTL

"NetBackup copies backup images from the VTL disk to a physical tape in an NDMP storage unit. It copies without using media server I/O or network bandwidth. NetBackup can also copy NDMP images directly between NDMP tape drives attached to an NDMP host. In both cases, this feature is called NDMP direct copy. This feature also enables NetBackup to restore data directly from either the image in the VTL or from the physical NDMP tape.

p.28 contains a diagram and this explanation:

TheNDMP direct copy feature uses a VTL that has an embedded NDMP tape server using the NDMP protocol. The embedded NDMP tape server moves the image from the VTL disk directly to a physical tape. The image does not pass through the NetBackup media server or travel over the network.

p.29 contains a diagram with explanation of data flow

So, if you consider all of the above, I cannot see how 'Alternate read server' will work, since no data is actually passed through the media server...