IBM MTM 2145-SV1, Hardware Installation Manual

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v Insert the connector gently until it clicks into place. If you feel resistance, the
connector is probably oriented the wrong way. Do not force it.
v
When inserted correctly, the connector can be removed only by pulling the tab.
▌1▐
Correct orientation for 2145-24F or 2145-12F SAS expansion enclosure
▌2▐
Correct orientation for 2145-SV1 node or 2145-92F SAS expansion enclosure
Be aware of the following guidelines when you attach the cables to the SAS ports.
v No cable can be connected between a port on a left canister and a port on a
right canister of the expansion enclosures.
v Ensure that cables are installed in an orderly way to reduce the risk of cable
damage when replaceable units are removed or inserted.
v SAS cables must be routed through the cable management arms to avoid the risk
of disconnecting the nodes from their flash drive arrays. This step also helps to
protect the SAS cables from getting damaged if the node is slid out on its rails
while attached to the enclosure.
v
Arrange your cables to provide access to the following components:
– Ethernet ports, including the technician port. The technician port is used for
initial setup of the system by directly attaching to a personal computer. It can
also be used to complete service actions for the system.
– USB ports. USB ports can be used to initialize the system or to perform
service-related tasks by using a USB flash drive that contains executable files
for initializing the system.
– Fibre Channel and Fibre Channel over Ethernet (FCoE) ports. If your system
has an optionally installed Fibre Channel and FCoE adapter for host and
external storage attachment, ensure that these ports are accessible.
– The nodes and the enclosures themselves. Access is required to the hardware
for servicing and for safely removing and replacing components by using two
or more people.
Procedure
1. Install the cables as shown in the following figure. Note that this illustration is
provided to show the cable connections between the SAS enclosures and each
2145-SV1. It does not imply or represent the precise racking order for the
devices in a cabinet/rack.
1 2
svc00868
Figure 39. SAS cable connector orientation
Chapter 3. Installing an optional 2U SAS expansion enclosure
35