Dell PowerVault 110T DLT VS80 - Network Configuration; Cabling and Configuring Your Network Connection

Dell DLT, VS and SDLT Media Handbook Page 14
Write Protect Switch – The write protect switch prevents overwrite or erasure of data. When this
switch is activated (orange is visible), data cannot be written to, appended to, or overwritten on the
media.
Figure 14 Write Protect Tab
Figure 15 VS1 Write Protect Tab