E-7
Appendix E: SC847J Chassis Internals and Externals
Figure E-8: External Cables for Connecting Head Units to JBODs
Figure E-9: Using a RAID/HBA Card and Expander to Connect Downstream
SMCI confidential document
7
Whitepaper
The RAID card in the head unit can cascade to the JBOD chassis either thru its own
expanders or thru its own external SFF 8088 connector. SMCI’s AOC-SAS2LP-H4iR has
one external connector for this purpose (i.e.
Section 3.2
). Block diagrams of the head
unit to JBOD chassis connectivity combinations are in
sections 3.1 and 3.2
below but
there are many combinations which you could connect a head unit to downstream JBODs
however I have covered the popular ones.
Section 3.1
– Using RAID/HBA card to connect downstream
Below is block diagram of how a head unit could be cascaded to a downstream JBOD
chassis which in our case is SC847E16. Here each of the backplanes in the JBOD unit is
connected to separate connectors on the RAID card in the head unit.
Section 3.2
– Using RAID/HBA card and expander to connect downstream
Picture of two external connectors from
host’s HBA/RAID to JBOD – Parallel
Figure 8
External cables used to connect Head
units and JBODs to each other
Figure 7
Head unit
DA Backplane
RAID card
SC847E16 JBOD chassis
SFF 8088 by four
CBL-0166
CBL-0166
Downstream
The RAID card in the head unit can cascade to the JBOD chassis either through
its own expanders or through its own external SFF 8088 connector. Supermicro’s
AOC-BPN-SAS2LP-H4iR has one external connector for this purpose. See the
Using a RAID/HBA Card to Connect Downstream section below. Block diagrams
of the head unit to JBOD chassis connectivity combinations are in this section and
in the following section titled, Using a RAID/HBA Card and Expander to Connect
Downstream. Of the many possible combinations to connect a head unit to down-
stream JBODs, these two are the most popular.
Using a RAID/HBA Card To Connect Downstream
Below is block diagram of how a head unit may be cascaded to a SC847J E16 JBOD
chassis downstream. In this example, each of the backplanes in the JBOD unit are
connected to separate connectors on the RAID card in the head unit.
SMCI confidential document
7
Whitepaper
The RAID card in the head unit can cascade to the JBOD chassis either thru its own
expanders or thru its own external SFF 8088 connector. SMCI’s AOC-SAS2LP-H4iR has
one external connector for this purpose (i.e.
Section 3.2
). Block diagrams of the head
unit to JBOD chassis connectivity combinations are in
sections 3.1 and 3.2
below but
there are many combinations which you could connect a head unit to downstream JBODs
however I have covered the popular ones.
Section 3.1
– Using RAID/HBA card to connect downstream
Below is block diagram of how a head unit could be cascaded to a downstream JBOD
chassis which in our case is SC847E16. Here each of the backplanes in the JBOD unit is
connected to separate connectors on the RAID card in the head unit.
Section 3.2
– Using RAID/HBA card and expander to connect downstream
Picture of two external connectors from
host’s HBA/RAID to JBOD – Parallel
Figure 8
External cables used to connect Head
units and JBODs to each other
Figure 7
Head unit
DA Backplane
RAID card
SC847E16 JBOD chassis
SFF 8088 by four
CBL-0166
CBL-0166
Downstream
SC847J E16 Series
JBOD Chassis
Head Unit
Downstream
CBL-0166
CBL-0166
SFF 8088 x 4
RAID Card
DA Backplane
Summary of Contents for SC847E16-R1K28JBOD
Page 12: ...SC847J SAS2 Chassis Manual 1 4 Notes ...
Page 40: ...SC847J SAS2 Chassis Manual 4 2 ...
Page 45: ...4 7 Chapter 4 Chassis Setup and Maintenance Figure 4 8 Placing the System Fan ...
Page 47: ...4 9 Chapter 4 Chassis Setup and Maintenance ...
Page 48: ...SC847J SAS2 Chassis Manual 4 10 Notes ...
Page 58: ...SC847J SAS2 Chassis Manual 5 10 Notes ...
Page 64: ...SC847J SAS2 Chassis Manual B 2 Notes ...
Page 87: ...C 24 SC847J SAS2 Chassis Manual Notes ...
Page 111: ...D 24 SC847J Chassis Manual Notes ...
Page 120: ...E 9 Appendix E SC847J Chassis Internals and Externals Notes ...