IBM manual LCSS-related numbers, Z990

Draft Document for Review April 7, 2004 6:15 pm 6947ch04.fm

HCD

1.Create IODF for z990 without PCHIDs

2.Create Validated Work IODF - HCD option 2.12 =

Build validated work I/O definition file

3.Create IOCP deck -

HCD option 2.3 =

Build IOCP input data set

5.Import IOCP deck with PCHIDs into IODF - HCD option 5.1 =

Migrate IOCP/OS data,

Migrate option 3 (PCHIDs)

6. Create a production IODF - HCD option 2.1 =

Build production I/O definition file

IODF

No PCHIDs

IOCP Deck

No PCHIDs

IOCP Deck

With

PCHIDs

IODF

With

PCHIDs

H/W Config file or CFreport

for your order

(CCN)

CHPID Mapping Tool

4.Run CHPID mapping tool. It will produce an IOCP deck with PCHIDs assigned

Reports

Figure 4-5 z990 I/O configuration definition flow

4.3 LCSS-related numbers

Table 4-2 lists LCSS-related information in terms of maximum values for devices, subchannels, logical partitions, and CHPIDs.

Table 4-2 z990 LCSS at a glance

	z990
Maximum number of LCSSs	4
Maximum number of CHPIDs	1024
Max. number of LPs supported per LCSS	15
Max. number of LPs supported per system	30
Maximum number of HSA subchannels	1890K (63K per partition * 30 partitions)
Maximum number of devices	252K (4 LCSSs * 63K devices)
Maximum number of CHPIDs per LCSS	256
Maximum number of CHPIDs per logical	256
partition
Maximum number of devices/subchannels	63K
per logical partition

Chapter 4. Channel Subsystem 117