Dell PowerVault TL4000 - Manual (Page 170)

that lacks WORM-capable firmware from writing on a WORM tape cartridge.
For LTO 6, native data capacity is 2500 GB and compressed data capacity is 6250
GB.
v When the drive senses a WORM cartridge, the firmware prohibits the changing
or altering of user data already written on the tape. The firmware keeps track of
the last appendable point on the tape.
WORM Media Errors
The following conditions cause WORM media errors to occur:
v Information in the servo manufacturer's word (SMW) on the tape must match
information from the cartridge memory (CM) module in the cartridge. If it does
not match, a media Error Code 7 will post on the drive's single-character display
(SCD).
v Inserting a WORM tape cartridge into a drive that is not compatible with
WORM causes the cartridge to be treated as an unsupported medium. The drive
will report a media Error Code 7. Upgrading the drive firmware to the correct
code level will resolve the problem.
Cleaning Cartridge
With each library, a specially labeled LTO Ultrium Cleaning Cartridge is supplied
to clean the drive head. The drive itself determines when a head needs to be
cleaned. It alerts you by lighting the "Clean Drive" (amber LED) above the library
Operator Control Panel. To clean the head manually, insert a cleaning cartridge
into the tape load compartment (see “Inserting the Cleaning Cartridge” on page
4-43). The drive performs the cleaning automatically. When the cleaning is finished,
the drive ejects the cartridge, and the library turns the "Clean Drive" LED off.
Some libraries have an Auto Clean function which, when enabled, will prompt the
library to retrieve the cleaning cartridge that resides in the library, insert it in the
drive that needs cleaning, clean the drive, then return the cleaning cartridge to its
home slot.
Note: The drive will automatically eject an expired cleaning cartridge.
The Cleaning Cartridges are valid for 50 uses.
Bar Code Label
A bar code label contains:
v A volume serial number (VOLSER) that is human-readable
v A bar code that the library can read
Note: The LTO Ultrium 5 and 6 Tape Drives do not require bar code labels, but
you may choose to use labels for tape cartridge identification purposes.
Table 6-5. Bar code label requirements for Ultrium tape drives and libraries
Ultrium Tape Drive/Library Bar Code Label Requirements
3573 Required
3576 Required
3580 Not required
3581 Required with optional Bar Code Reader
3582 Required
6-4 Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide