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
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
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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