Sas Cable Connector Orientation - IBM SAN Volume Controller 2145-SV1 Hardware Installation Manual

• 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.
• When inserted correctly, the connector can be removed only by pulling the tab.
Figure 42. SAS cable connector orientation
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.
• No cable can be connected between a port on a left canister and a port on a right canister of the
expansion enclosures.
• Ensure that cables are installed in an orderly way to reduce the risk of cable damage when replaceable
units are removed or inserted.
• 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.
• 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: 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.
Chapter 3. Installing an optional 2U SAS expansion enclosure 37