IBM 990 User Manual
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IBM
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zSeries 990 Technical Guide
Note that I/O cage slot numbers 05, 14, 23, and 28 are reserved for eSTI-M cards.
The PCHID number range from 000 to 0FF is reserved for ICB-4 links. As ICB-4 links are
directly connected to a book, Table 3-6 shows the ICB-4 PCHID numbers range for each
book.
Table 3-6 PCHID numbers for ICB-4 links
The server’s PCHID Report has all the installed PCHID numbers. At definition time, PCHIDs
are assigned to Channel Path IDs (CHPIDs) using the CHPID Mapping Tool, or HCD/HCM, or
12 (front)
1A0 - 1AF
3A0 - 3AF
5A0 - 5AF
13 (front)
1B0 - 1BF
3B0 - 3BF
5B0 - 5BF
15 (front)
1C0 - 1CF
3C0 - 3CF
5C0 - 5CF
16 (front)
1D0 - 1DF
3D0 - 3DF
5D0 - 5DF
17 (front)
1E0 - 1EF
3E0 - 3EF
5E0 - 5EF
18 (front)
1F0 - 1FF
3F0 - 3FF
5F0 - 5FF
19 (rear)
200 - 20F
400 - 40F
600 - 60F
20 (rear)
210 - 21F
410 - 41F
610 - 61F
21 (rear)
220 - 22F
420 - 42F
620 - 62F
22 (rear)
230 - 23F
430 - 43F
630 - 63F
24 (rear)
240 - 24F
440 - 44F
640 - 64F
25 (rear)
250 - 25F
450 - 45F
650 - 65F
26 (rear)
260 - 26F
460 - 46F
660 - 66F
27 (rear)
270 - 27F
470 - 47F
670 - 67F
29 (rear)
280 - 28F
480 - 48F
680 - 68F
30 (rear)
290 - 29F
490 - 49F
690 - 69F
31 (rear)
2A0 - 2AF
4A0 - 4AF
6A0 - 6AF
32 (rear)
2B0 - 2BF
4B0 - 4BF
6B0 - 6BF
CEC cage book
PCHID numbers
0
010 - 01B
1
020 - 02B
2
030 - 03B
3
000 - 00B
Important:
If the STI Rebalance feature (Feature Code 2400) is selected on a z990 server
upgrade, the current ICB-4 PCHID numbers may change. This requires the corresponding
update of the ICB-4 link definition in the z990 server I/O configuration.
I/O cage slot
PCHID numbers
1st I/O cage
2nd I/O cage
3rd I/O cage