
SSA Loops and Links
The disk drive modules of the system unit are connected through two SSA links to
an SSA adapter that is located in the using system. The disk drive modules, SSA
links, and SSA adapter are configured in loops. Each loop provides a data path that
starts at one connector of the SSA adapter and passes through a link (SSA cable) to
the disk drive modules. The path continues through the disk drive modules, then
returns through another link to a second connector on the SSA adapter.
The SSA Adapter
The system unit can be attached to an SSA adapter. See Figure 3-1. The adapter
card has four SSA connectors that are arranged in two pairs. Connectors A1 and A2
are one pair; connectors B1 and B2 are the other pair. Connectors B1 and B2 are
used on 7025 Model F50, since they support the internal and external SSA cable
options.
Connector B2
Connector B1
Connector A2
Connector A1
Type-Number
Label
Green Light
Green Light
Figure
3-1. SSA Adapter Card
Chapter 3. Error Code to FRU Index
3-59
Summary of Contents for RS/6000 7025 F50 Series
Page 1: ...RS 6000 7025 F50 Series IBM Service Guide SA38 0541 01 ...
Page 6: ...vi Service Guide ...
Page 14: ...xiv Service Guide ...
Page 16: ...xvi Service Guide ...
Page 18: ...Rear View 1 2 Service Guide ...
Page 23: ...Operator Panel Chapter 1 Reference Information 1 7 ...
Page 24: ...System Data Flow 1 8 Service Guide ...
Page 120: ...AIX and Physical Location Code Reference Table 3 48 Service Guide ...
Page 121: ...Chapter 3 Error Code to FRU Index 3 49 ...
Page 208: ...5 40 Service Guide ...
Page 211: ...Covers Removal 1 Open the door Chapter 6 Removal and Replacement Procedures 6 3 ...
Page 217: ...b Remove the I O planar cover Chapter 6 Removal and Replacement Procedures 6 9 ...
Page 222: ...5 Close the door 6 14 Service Guide ...
Page 231: ...4 Remove the screw holding the adapter Chapter 6 Removal and Replacement Procedures 6 23 ...
Page 240: ...4 Remove the Processor card s as described in Processor Card on page 6 35 6 32 Service Guide ...
Page 247: ...Chapter 6 Removal and Replacement Procedures 6 39 ...
Page 251: ...Replacement Replace in reverse order Chapter 6 Removal and Replacement Procedures 6 43 ...
Page 255: ...Chapter 7 Parts Information Chapter 7 Parts Information 7 1 ...
Page 256: ...7 2 Service Guide ...
Page 278: ...A 16 Service Guide ...
Page 344: ...D 28 Service Guide ...
Page 348: ...E 4 Service Guide ...
Page 357: ...voice phone number B 20 VPD vital product data B 13 VPD vital product data 3 93 Index X 9 ...
Page 358: ...X 10 Service Guide ...
Page 361: ......