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User manual HP, model HP Smart Array (RAID) Host Bus Adapters

Manafacture: HP
File size: 1.08 mb
File name:
Language of manual:en
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manual abstract





Serial Attached SCSI technologies and architectures

Technology brief, 4th edition

Introduction ......................................................................................................................................... 2
SAS devices ........................................................................................................................................ 2

Initiators .......................................................................................................................................... 2
Expanders ....................................................................................................................................... 3
Targets ........................................................................................................................................... 3

SAS protocol ....................................................................................................................................... 3
Active cables ................................................................................................................................... 3
Storage power management ............................................................................................................. 4
Differential signaling ........................................................................................................................ 4

SAS/SATA interoperability ................................................................................................................... 5
SAS topologies .................................................................................................................................... 5

Internal ........................................................................................................................................... 6
External .......................................................................................................................................... 7
Multi-node clusters ............................................................................................................................ 8
Dual-path and dual-domain architectures ............................................................................................ 8

Dual-path with cascaded JBODs ..................................................................................................... 8
Dual-domain SAS ......................................................................................................................... 9
Zoning ............................................................................................................................................. 12
Zone management ......................................................................................................................... 13
Zoning advantages in an HP environment ......................................................................................... 14
Zoning example ............................................................................................................................. 15
Cabling and connectors technology ..................................................................................................... 16
SAS drive performance ...................................................................................................................... 18
Conclusion ........................................................................................................................................ 18
Appendix: SAS terminology ................................................................................................................ 20
For more information .......................................................................................................................... 21



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