F-11
Appendix F: SAS-846EL Backplane Specifieations
Single Host Bus Adapter
In a single host bus configuration, the
backplane connects to one Host Bus
Adapter (HBA).
PRI_J0
PRI_J1
PRI_J2
SEC_J0
SEC_J1
SEC_J2
J17
WWN
SAS HBA
Port A
Expander 1
Port B
Expander 2
Figure F-6: Single HBA
The SAS-846EL2 backplane has two expanders which allow effective failover.
F-10 Failover
PRI_J0
PRI_J1
PRI_J2
SEC_J0
SEC_J1
SEC_J2
J17
WWN
SAS HBA
Port A
Expander 1
Port B
Expander 2
Single Host Bus Adapter
Failover
If the expander or data path in Port A
fails, the system automatically switches
to Port B.
Figure F-7: Single HBA Failover
PRI_J0
PRI_J1
PRI_J2
SEC_J0
SEC_J1
SEC_J2
J17
WWN
SAS HBA
Port A
Expander 1
Port B
Expander 2
SAS HBA
Dual Host Bus Adapter
In a Dual Host Bus Configuration, the
backplane connects to two Host Bus
Adapters (HBA).
Figure F-8: Dual HBA
PRI_J0
PRI_J1
PRI_J2
SEC_J0
SEC_J1
SEC_J2
J17
WWN
SAS HBA
Port A
Expander 1
Port B
Expander 2
SAS HBA
Dual Host Bus Adapter
Failover
If the expander or data path in Port A
fails, the system automatically switches
to Port B. This maintains a full connec-
tion to all drives.
Figure F-9: Dual HBA Failover
Summary of Contents for SC847A-R1400LPB
Page 8: ...SC847 Chassis Manual viii Notes...
Page 34: ...SC847 Chassis Manual 4 14 Figure 4 15 Placing the System Fan...
Page 36: ...SC847 Chassis Manual 4 16 Notes...
Page 52: ...SC847 Chassis Manual B 2 Notes...
Page 62: ...C 10 SC847 Chassis Manual Notes...
Page 72: ...D 10 SC847 Chassis Manual Notes...
Page 94: ...E 22 SC847 Chassis Manual Notes...
Page 119: ...F 25 Appendix F SAS 846EL Backplane Specifieations Notes...