IBM z13s User Manual

194 IBM z13s Technical Guide
A sample of channel paths that are defined as dedicated, shared, and spanned is shown in
Figure 5-3.
Figure 5-3 z Systems CSS: Channel subsystems with channel spanning
In the sample, three different definitions of a channel path are shown:
򐂰 CHPID FF, assigned to PCHID 20A, is dedicated access for partition 15 of LCSS0, same
apply to CHPID 00,01,02 of LCSS0, and CHPID 00,01, FF of LCSS1.
򐂰 CHPID 03, assigned to PCHID 20E is shared access for partition 2, and 15 of LCSS0,
same apply to CHPID 05 of LCSS1.
򐂰 CHPID 06, assigned to PCHID 120 is spanned access for partition 1, 15 of LCSS0, and
partition 16, 17 of LCSS1, same apply to CHPID 04.
Channel spanning is supported for internal links (HiperSockets and IC links) and for certain
types of external links. External links that are supported on z13s servers include FICON
Express16S, FICON Express8S, FICON Express8 channels, OSA-Express5S,
OSA-Express4S, and Coupling Links.
The definition of LPAR name, MIF image ID, and LPAR ID are used by the channel subsystem
to identify an LPAR to identify I/O functions from different LPARs of multiple LCSSs. Doing so
supports the implementation of these dedicated, shared, and spanned accessing.
CSS0
Partition
1
. . .
Partition
2
Partition
14
Partition
15
Partition
16
Partition
17
Partition
18
Partition
40
. . .
MIF-1
MIF-2
MIF-F
. . .
CSS1
MIF-1
MIF-2
MIF-3
MIF-F
CHPID
00
CHPID
01
CHPID
02
CHPID
03
Share
PCHID
10B
PCHID
10C
PCHID
10D
PCHID
20E
. . .
CHPID
FF
PCHID
20A
CHPID
04
SPAN
CHPID
06
SPAN
PCHID
120
CHPID
00
CHPID
01
CHPID
05
Share
CHPID
22
CHPID
FF
PCHID
145
PCHID
146
PCHID
147
PCHID
158
PCHID
159
. . .
. . .
. . .

IBM z13s Specifications

General

Brand	IBM
Model	z13s
Category	Server
Language	English