HP B6960-96035 User Manual download pdf (Page 122)

Backup performance also depends on factors such as device block sizes and the

connection of devices. If the devices used for backup and object mirroring have

different block sizes, the mirrored data will be repackaged during the session, which

takes additional time and resources. If the data is transferred over the network, there

will be additional network load and time consumption.

Copying media

What is media copying?

The Data Protector media copy functionality enables you to copy media after a

backup has been performed. Media copying is a process that creates an exact copy

of a medium containing a backup. You can use it to duplicate media for archiving

or vaulting purposes. After the media have been copied, you can move either the

original media or the copies to an off-site vault.

Besides manually started media copying, Data Protector also offers automated media

copying. For more information, see “Automated media copying” on page 124.

How to copy media

You need two devices of the same media type, one for the source medium and one

for the target medium. The source medium is the medium being copied while the

target medium is the medium to which data is copied.

When you copy media within a library that has multiple drives, you can use one

drive for the source and one for the copy.

What is the result?

The result of copying media is two identical sets of media, the original media set and

the copy. Either of them can be used for restore.

After the source medium has been copied, Data Protector marks it as non-appendable

to prevent appending new backups (this would result in the original being different

from its copy.) The copy is also marked as non-appendable. The default protection

of the copy is the same as for the original.

You can make multiple copies of the original media. You cannot, however, make

copies of copies, also known as second generation copies.

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HP B6960-96035 User Manual Page 122