What exactly the difference between media and volume?bpmedialist and vmquery command?

[NIKHIL234656595]

Term	Description
Volume	Any individual bit of media - tape, optical disk, etc.
Volume Pool	A logical grouping of volumes to be used for a specific application. For instance, Oracle backs up to a certain pool, the OS to a different pool, and product code to a third pool.
Volume Group	A logical grouping of volumes based on physical location. Whereas the pool is used for actual data, the group is used for administrative work. If you wanted to move all the volumes from one robot to another, you can either move the volumes one at a time or, if they're all in the same group, move the group.

What exactly the difference between media and volume?bpmedialist and vmquery command?

[mph999 · Accepted solution]

Tapes are sometimes called tapes, or media or volumes.

vmquery shows what is in the volume database

bpmedialist shows what is in the media database

A tape is in the volume database as soon as it becomes visible to NBU, so any tape that you can see under media is in the vol DB, and it stays there forever, unless you delete it.

A tape is in the media database only if it contains images.  As soon as the images expire, it is removed from the media db. 

Martin

[NIKHIL234656595]

1. So as such there is no difference between tape and volume?
2. when we add a tape first time,it gets added in the vol DB until we delete it manually?
3. what if we set the volume to expire on a particular date?Then after that will it show in the volDB?

[Mark_Solutions]

1. not really no

2. yes

3. stays in voldb - leaves media db

[mph999]

I would agree with mark, I will just modify his answer to question 3.

3. yes, it stays in the voldb, leaves the media db