Storage Enclosure Topology - IBM Power System 5888 Service Information

Table 3. Isolation procedure component with FRU name and location
Isolation procedure component
SAS controller
SAS cable
Device enclosure
SAS expander
Disk drive
Note: It is important to determine which of the redundant ERMs is the cause of a problem. To determine the ERM
physical location to ensure that the correct physical components are identified. See "RAID controller location code"
on page 35.

Storage enclosure topology

Find information to help you locate components within the 5888 or EDR1 PCIe storage enclosure.
Figure 41 shows the location of components within the 5888 or EDR1 PCIe storage enclosure.
Figure 41. Component locations
Figure 42 on page 42 shows the SAS physical links and device interfaces (PHY) of components within the
5888 or EDR1 PCIe storage enclosure.
5888 or EDR1 FRU
ERM assembly
ERM assembly
Midplane assembly
ERM assembly
Solid-state drive (SSD) assembly
5888 or EDR1 location
U5888.001.sssssss-P1-Cx
U5888.001.sssssss-P1-Cx
U5888.001.sssssss-P1
U5888.001.sssssss-P1-Cx
U5888.001.sssssss-P1-Dx
Service information
41