ADIC 601354 사용자 설명서

601354 Rev A

Initial Configuration

3-29

During archive configuration, a different set of high and low 
marks are entered. These marks are used to determine when to 
start and stop media type migration. Refer to 

. Both sets of marks are 

independent from each other. 

Media Type 
Migration

As described earlier (Refer to 

), media 

are migrated to another archive once a media type fill level 
reaches the media type high mark because of media entry. The 
media type high mark is distinct from the media class high 
mark. 

Each medium selected for media type migration must conserve 
its media class. Although media type migration causes media to 
be migrated to another archive, each selected medium must also 
remain in its present media class. Furthermore, a medium is not 
migrated unless its media class migrate action mode is selected. 
When these two preconditions exist, that medium can be 
migrated via the media type migration process. 

After media type migration starts, the number of media required 
to reach the media type low mark is calculated. This value is 
equal to the difference between the media type fill level 
threshold minus the media type low mark threshold. The 
amount of media of that media type present on the Eject list is 
also subtracted from the media type fill level. 

Next, the archive media class with the highest migration 
priority is first selected for migration. Refer to 

. If the selected archive 

media class fill level is below its low mark threshold, the 
archive media class with the next highest priority is selected. 
VolServ software then places media from the source archive 
media class on the archive eject list. The source archive 
Console display EJECT button is then highlighted.