E-3
Appendix E: SC847J Chassis Internals and Externals
Figure E-2: BPN-SAS2-846EL1
BPN-SAS2-846EL1/EL2
BPN-SAS2-846EL1 is one of the two expander backplanes which may be used in
the SC847J chassis. This backplane supports twenty-four 3.5” SAS/SATA drives
and operates at a theoretical BPN-SAS2 performance of 6Gbs per phy. It supports
enclosure elements such as fan RPM, temperature and power through the SES-II
interface. It has three SFF 8087 connectors identified as J0, J1 and J2. The J0
connector is used for connecting to an expander from a host. J1 (auxiliary) is used
in case J0 fails or it may also be used for zoning. J2 is used to cascade to the next
expander backplane downstream.
There is also dual version of the same expander which has two expander chips,
therefore it is necessary to have two paths to each drive behind the expander. It
is mandatory to use SAS drives when using dual expander backplanes. This is
because the SAS drives have dual connectivity, therefore enabling the redundancy
feature. No SATA drives should be used in dual expander backplanes.
BPN-SAS2-847EL1/EL2
BPN-SAS2-847EL1/EL2 is one of the two expander backplanes which may be
used in this chassis. This backplane supports twenty-one 3.5” SAS/SATA drives
and operates at a theoretical BPN-SAS2 performance of 6Gbs per phy. It supports
enclosure elements such as fan RPM, temperature and power through the SES-II
interface. It has two SFF 8087 connectors. The J0 connector is used to connect to
the expander to a host and J1 is used to cascade to the next expander backplane.
SMCI confidential document
3
Whitepaper
Section 1.2
- BPN-SAS2-846EL1/2
BPN-SAS2-846EL1 is one the two expander backplanes which is used in this chassis.
This backplane supports 24 3.5” SAS/SATA drives and operates at theoretical SAS-2
performance of 6Gbs per phy. It supports enclosure elements such as FAN RPM, temp
and power thru SES-II interface. It has 3 SFF 8087 connectors identified as J0, J1 and J2.
J0 connector is used for connecting to expander from a host. J1 is used in case J0 fails
(i.e. auxiliary) or could also be used for zoning. J2 is used to cascade to next expander
backplane downstream.
There is also dual version of the same expander which has 2 expander chips therefore you
have two paths to each drive behind the expander. It is mandatory to use SAS drives
when you use the dual expander backplanes. This is because the SAS drives have dual
connectivity therefore enabling the redundancy feature. So No SATA drives should be
used in dual expander backplanes.
Section 1.3
– BPN-SAS2-847EL1/2
BPN-SAS2-847EL1/2 is one of the two expander backplanes which is used in this
chassis. This backplane supports 21 3.5” SAS/SATA drives and operates at theoretical
SAS-2 performance of 6Gbs per phy. It supports enclosure elements such as FAN RPM,
temp and power thru SES-II interface. It has 2 SFF 8087 connectors. J0 connector is used
to connect to the expander to a host and J1 is used to cascade to next expander backplane.
Picture of BPN-SAS2-846EL1
Figure 2
J2 - Outbound
to Downstream
J1 - Auxiliary
J0 - Inbound
from an
Initiating System
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 ...