Dell PowerVault TL1000 - Manual (Page 68)

Note: Library firmware and tape drive firmware are verified and released together.
When the latest firmware is updated, verify that all installed components
such as the tape drive and library are at the latest levels noted on the
Support website. Mixing different levels of library and tape drive firmware
is not supported and might cause unpredictable results.
Dell suggests that you update library and drive firmware when new levels become
available. For instructions on updating library and drive firmware, see “Updating
library and drive firmware” on page 4-38.
Now you are ready to use your library.
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