v Inserting a WORM tape cartridge into a drive that is not WORM capable causesthe cartridge to be treated as an unsupported medium. The drive will report amedia Error Code 7. Upgrading the drive firmware to the correct code level willresolve the problem.Cleaning CartridgeWith each library, a specially labeled LTO Ultrium Cleaning Cartridge is suppliedto clean the drive head. The drive itself determines when a head needs to becleaned. It alerts you by lighting the "Clean Drive" (amber LED) above the libraryOperator Control Panel. To clean the head manually, insert a cleaning cartridgeinto the tape load compartment (see “Inserting the Cleaning Cartridge” on page4-37). 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 thelibrary to retrieve the cleaning cartridge that resides in the library, insert it in thedrive that needs cleaning, clean the drive, then return the cleaning cartridge to itshome slot.Note: The drive will automatically eject an expired cleaning cartridge.The Cleaning Cartridges are valid for 50 uses.Bar Code LabelA bar code label contains:v A volume serial number (VOLSER) that is human-readablev A bar code that the library can readNote: The IBM LTO Ultrium 5 Tape Drive does not require bar code labels, butyou may choose to use labels for tape cartridge identification purposes.When read by a library's bar code reader, the bar code identifies the cartridge'sVOLSER to the library. The bar code also tells the library whether the cartridge is adata cartridge or cleaning cartridge. In addition, the bar code includes thetwo-character media-type identifier Lx, where x equals 1, 2, 3, 4, or 5. L identifiesthe cartridge as an LTO cartridge and the number represents the generation ofcartridge for that cartridge type. Figure 6-3 on page 6-5 shows a sample bar codelabel for the LTO Ultrium Tape Cartridge.Tape cartridges can be ordered with the labels included or with custom labels. Thebar code for usage in LTO tape libraries must meet predefined specifications. Theyinclude (but are not limited to):v Six or eight (the default) uppercase alphanumeric characters, where the last twocharacters must be L5, L4, L3, L2, or L1.v Label and printing to be non-glossyv Nominal narrow line or space width of 0.423 mm (0.017 in.)v Wide to narrow ratio of 2.75:1v Minimum bar length of 11.1 mm (0.44 in.)Table 6-3. Cartridges and VOLSERs compatible with the Ultrium Tape DrivesCartridges VOLSERUltrium 5 Data Cartridge xxxxxxL56-4 Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide