IBM FlashSystem 5000 Series, Quick Installation Manual

Page: 71 / 106

Figure 49. SAS cable correctly inserted into the SAS port
Connecting the 5U expansion enclosures
After you install 5U expansion enclosures into the rack, you must connect them to each system that will
use them. The system requires software version 7.8.0. Do not connect the expansion enclosure if
software version 7.8.0 is not installed on the system.
About this task
Note: When you insert SAS cables, ensure that the connector is oriented correctly to the node and
expansion enclosure.
• For 2U expansion enclosures (12 or 24 drives), the blue pull tab must be below the cable ( 1 in Figure
50 on page 53 ).
Figure 50. SAS cable connector orientation
• For 5U expansion enclosures, the blue pull tab must be above the connector ( 2 in Figure 50 on page
53).
• 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.
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 reduce the risk of disconnecting the
nodes from their storage arrays. This step also helps to protect the SAS cables from getting damaged if
you slide the node or enclosure out of the rack while they are attached. 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.
Chapter 4. Installing the system hardware 53