Spectra T950 - Worm Media; Cleaning Cartridges

Appendix D — Specifications Tape Drive and Media Specifications
November 2016 User Guide—Spectra T950 Library
552
TS11x0 Technology Media Specifications
ThefollowingtableshowsthecapacitiesofTS11x0technologycartridges.
WORM Media
CertainrecordsretentionanddatasecurityapplicationsrequireaWrite
Once,ReadMany(WORM)methodforstoringdataontape.LTO‐3and
latergenerationdrivesandTS11x0technologydrivesenableWORM
supportwhenaWORMtapecartridgeisloadedintothedrive.
WORM Media Requirements Becausestandardread/writemediaare
incompatiblewiththeWORMfeature,aspeciallyformattedWORMtape
cartridgeisrequired.EachWORMcartridgehasaunique,worldwide
cartridgeidentifier(WWCID),whichcomprisestheuniqueCMchipserial
numberandtheuniquetapemediaserialnumber.
Data Security on WORM Media Certainbuilt‐insecuritymeasureshelp
ensurethatthedatawrittenonaWORMcartridgedoesnotbecome
compromised,forexample:
 TheformatofaWORMtapecartridgeisunlikethatofstandardread/
writemedia.ThisuniqueformatpreventsadrivethatlacksWORM‐
capablefirmwarefromwritingonaWORMtapecartridge.
 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.
Cleaning Cartridges
Cleaningcartridgesarevalidfor50uses.Donotrewindandreusethe
materialinacleaningcartridge.Reusingthematerialmayredistribute
contaminantspreviouslyremovedfromthetapepath.Ifallofthecleaning
materialisused,discardthecartridgeanduseanewcleaningcartridge.
Media Generation Native Capacity
(Compressed Capacity
a
)
a. Assuming a 2.5:1 compression ratio. The compressed capacity depends on the type of data.
TS1140technologyand
TS1140technologyWORM
4TB(10TB)
TS1150technologyand
TS1150technologyWORM
10TB(25TB)