Supermicro CSE-847E26-R1K28JBOD Manual de usuario descargar pdf (Pagina 97)

E-3

Appendix E: SC847J Chassis Internals and Externals

Figure E-2: SAS2-846EL1

SAS2-846EL1/EL2

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 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 identied 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.

SAS2-847EL1/EL2

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 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

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 103 104

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