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5. After making that configuration change to the drive, you see a new icon in front of it to show you the new role (Figure 8-6). 

<img src='content_image/977739.jpg'>

Note:  The MVD flag for a tape drive is a global setting, which means that after it is assigned, the drive keeps its role as an MVD even it is unassigned and then assigned to a new logical library. Unassigning does not disable this role. 

To unassign a drive from being an MVD, follow the same procedure again, and select (after the right-click) Use for Media Access . This action changes the drive role back to normal operation for the attached host application to this logical library. 

Figure 8-7 shows you the TS4500 web interface dialog box for enabling automatic media verification on an existing logical library. You must go to the Cartridges by Logical Library page. Then, select Modify Media Verification  for the selected logical library. The Automatic Media Verification dialog box opens where you can enter the media verification schedule. 

<img src='content_image/977740.jpg'>

By using this dialog box, you can enable/disable an automatic media verification schedule. Then, you can configure how often the media should be verified and the first verification date. Finally, you can select the MVDs, which are selected by the library to perform the scheduled media verification test. 

