HP StoargeWorks ESL9000 series tape library user guide (April 2003)

Preparing the Library for Operation
51HP StorageWorks ESL9000 Series Tape Library User Guide
Setting the Write-Protect Switch
Each tape cartridge has a sliding write-protect switch. This switch determines
whether new data can be written to the tape cartridge (write-enabled) or whether
data on the tape cartridge is protected from being erased or overwritten
(write-protected).
Write-Protecting SDLT Tape Cartridges
By moving the switch to the left (Figure 18), the tape cartridge is write-protected
(orange indicator is visible). By moving the switch to the right (Figure 18), the
tape cartridge is write-enabled (orange indicator is not visible).
Moving the write-protect switch to the left while the tape cartridge is in the SDLT
tape drive causes the red indicator to immediately light up. If the tape drive is
writing data to the tape cartridge, write-protect does not begin until the current
write command completes.
Figure 18: Write-protecting SDLT tape cartridges
Write-Protect Switch