Spectra T50e - Page 513

Appendix C—Specifications Tape Drive and Media Specifications
August 2017 User Guide—Spectra T50e Library
508
Barcode Data
Thelibrarysupportsbarcodedatastringsconsistingofastartcharacter,
eightcharacters,includingalphanumericcharactersandanoptional
checksumcharacter,andthestopcharacter.Quietzonesprecedeand
followthestartandstopcharacters.
Note: BlueScale12.3.1increasedthenumberofbarcodedigitstheT50e
canrecognizeto16characters.PriortoBlueScale12.3.1,the
librarycanrecognize8characters,plusonechecksumcharacter.
Ifachecksumcharacterisnotincludedonthelabel,thebarcode
datastringcancontainuptoninealphanumericcharacters.
 Thefirstsix(6)charactersfollowingthestartcharactercanbeany
combinationofuppercaseA–Zor0–9(forexample,ABC123)to
identifythecartridgeVolumeSerialNumber.
 Thebarcodestringcanbeprintedineitherdirectiononthelabeland
mustbeginandendwithavalidstart/stopcharacter(
*
).
 Thelabelmustbeprintedsothatthebarcodedataispositionedalong
theedgeofthelabelthatisclosesttothehubsideofthecartridge.
TheAIMUniformSymbolUSS‐39specificationprovidesdetailed
informationabouttheformatofthestartcharacter,theseriesofcharacters
thatmakeupthebarcodedata,andthestopcharacter.
Volume Identifier Formats
 Thevolumeidentifierfieldconsistsofsix(6)leftjustifiedalphanumeric
charactersasdescribedintheSCSI‐3MediumChangerCommands(SMC)
ANSINCITS314‐199Xspecification.Thevolumeidentifieronlyuses
ASCIIcharactersA–Zand0–9.Theuseof“CLN”and“DG{space}”at
thebeginningofthevolumeidentifierisreserved.
Note: Thelibraryonlysupportsbarcodeswitheightalphanumeric
charactersifthelabelincludesachecksumcharacter;nine
alphanumericcharacterscanbeusedifthelabeldoesnotinclude
achecksumcharacter.
 Thevolumeidentifier“CLNvnn”isreservedforcleaningcartridges.
Whenadriverequirescleaning,itrequestsaspecifictypeofcleaning
cartridge.
 The“v”fieldisanalphanumericfieldtoidentifycleaningcartridge
applications,“U”forUniversalCleaningCartridgesoradrive
uniqueidentifier.
 The“nn”alphanumericfieldisusedtotrackindividualcleaning
cartridgeactivity(thatis,usageandlife).
 Thevolumeidentifier“DG{space}vnn”isreservedfordiagnosticand
servicecartridges.