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Redundancy in enterprise storage networks
using dual-domain SAS configurations
technology brief
Abstract.............................................................................................................................................. 2
Introduction......................................................................................................................................... 2
Why dual-domain SAS is important ....................................................................................................... 2
Single SAS domain .......................................................................................................................... 3
Dual-domain SAS............................................................................................................................. 4
Examples of redundant architectures using serial storage.......................................................................... 5
Dual-domain SAS............................................................................................................................. 5
Dual-domain SAS: servers in two-node cluster...................................................................................... 6
HP dual-path with cascaded JBODs.................................................................................................... 7
Summary ............................................................................................................................................ 8
Appendix A: Nomenclature and definitions ............................................................................................ 9
Dual-path .................................................................................................................................... 9
Dual-port ..................................................................................................................................... 9
JBOD .......................................................................................................................................... 9
Multiple SCSI domains .................................................................................................................. 9
Port Identifier ............................................................................................................................... 9
phy........................................................................................................................................... 10
SAS domain .............................................................................................................................. 10
SCSI domain.............................................................................................................................. 10
SCSI initiator.............................................................................................................................. 10
SCSI initiator port ....................................................................................................................... 10
SCSI target port ......................................................................................................................... 10
Appendix B: Enabling technology........................................................................................................ 11
SAS and SATA technology.............................................................................................................. 11
Connectors ................................................................................................................................ 12
Backplane ................................................................................................................................. 13
Devices......................................................................................................................................... 13
Drives and controllers ................................................................................................................. 13
Expander .................................................................................................................................. 13
Cluster Interconnect .................................................................................................................... 13
Firmware and Software .................................................................................................................. 14
Serial Tunneling Protocol (STP) ..................................................................................................... 14
SPC-3 Target port group commands ............................................................................................. 14
For more information.......................................................................................................................... 15
Call to action .................................................................................................................................... 15
... Questo manuale è adatto anche per i modelli :
dati dispositivi di elaborazione - HP MSA60 Dual Domain (12) 1TB 3.5-inch DP SAS MDL HDD 12TB Bundle (303.69 kb)
dati dispositivi di elaborazione - HP MSA60 Dual Domain (12) 450GB 3.5-inch DP SAS HDD 5.4TB Bundle (303.69 kb)
dati dispositivi di elaborazione - HP MSA70 Array (303.69 kb)
dati dispositivi di elaborazione - HP MSA70 Dual Domain (25) 300GB 2.5-inch DP SAS HDD 7.5TB Bundle (303.69 kb)