difference between

[NIKHIL234656595]

What is the difference between media type and media density?

[revarooo]

Tape Density: The number of bits of information/data (Bytes) that can be included in each inch of specific magnetic tape (1600 BPI, 6250 BPI).

Media Type, this is just a label within NetBackup to differentiate between different media, such as LTO3 and DLT. 

[NIKHIL234656595]

can you please provide the examples of the two?

[revarooo]

Have read of this too:

http://www.symantec.com/business/support/index?page=content&id=HOWTO73178

Do some web search on Tape Density and Media Type

[NIKHIL234656595]

4. Robot Inventory checks the density of drives configured in the robot. If drives with multiple densityare present then the robot type is used to assign the media density.

Example: If there are mutiple density (HCART, HACRT2, HACRT3 etc) drives configured in a robot and the robot type configured in NetBackup is TLD (Tape Library DLT) then the density assigned to media is DLT.

I dint understand this point

[mph999 · Accepted solution]

It simply means that if the library has differenrt types of tape drives in it - for exaplme LTO3 and LTO4 drives,

NBU uses the 'default' density when coinventoring tapes into the library.  For an TLD robot, this is DLT.

So, in this situation, the tapes would be added into NBU with the density 'DLT', not hcart, or hcart2 you might be expecting.

To avoid this, use correctly labelled tapes and configure barcode rules, or, just manually change the tape density.

Martin

[Marianne]

In summary - media type and media density is the same in NBU. The terms are used interchangeably.