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Contents

............................................................................................................................. ii

Read this FIRST.................................................................................................... iii

Accessing online technical support............................................................................................................ iii

Contacting IBM technical support.............................................................................................................. iii

Registering for My Notication....................................................................................................................iii

Feedback..................................................................................................................................................... iii

Summary of changes..............................................................................................v

Figures................................................................................................................. xi

Tables................................................................................................................xvii

Safety and environmental notices ........................................................................xx

Danger and Caution notices....................................................................................................................... xx

Possible safety hazards............................................................................................................................ xxv

Class I laser product.................................................................................................................................xxv

Acclimation.............................................................................................................................................. xxvi

Performing the safety inspection procedure.......................................................................................... xxvi

Rack safety...............................................................................................................................................xxvi

Power Cords..............................................................................................................................................xxx

Preface.............................................................................................................xxxi

Chapter1.Overview.............................................................................................. 1

Introduction................................................................................................................................................. 1

Structure and supported library congurations..........................................................................................2

Differences between 21U and 48U libraries..........................................................................................3

Components............................................................................................................................................5

Numbering scheme overview.................................................................................................................9

User interfaces...........................................................................................................................................10

Supported tape drives............................................................................................................................... 10

Control path drives...............................................................................................................................13

Mixed drives..........................................................................................................................................13

Drive sled back panels......................................................................................................................... 14

Physical and logical addresses of drives............................................................................................. 17

Drive features.............................................................................................................................................17

Media optimization...............................................................................................................................17

Recommended access order (RAO) open function ............................................................................ 18

Archive mode unthread........................................................................................................................18

Speed matching....................................................................................................................................18

Channel calibration.............................................................................................................................. 20

Data cartridge capacity scaling............................................................................................................20

Power management............................................................................................................................. 20

Encryption.............................................................................................................................................20

Supported tape cartridges.........................................................................................................................20

Library functions........................................................................................................................................ 23

Encryption.............................................................................................................................................23

Library sharing......................................................................................................................................23

IBM Condential

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