Chapter 8. Capacity upgrades 193
Draft Document for Review April 7, 2004 6:15 pm 6947ch08.fm
The new amount of installed memory cannot cause the storage granularity or increment to
change.
However, a new Reset Profile (to allow the customer to potentially select a higher storage
increment to Plan Ahead for concurrent memory upgrade) will be available.
The Minimum Storage Granularity will be the required storage granularity based on what
memory is currently LIC-CC installed. The Maximum Concurrent Upgrade Value will be the
smaller of the amount of storage which is physically installed and the maximum storage
allowed for the Minimum Storage Granularity (see 2.2.10, “LPAR storage granularity” on
page 70).
CUoD for I/O
CUoD for I/O can add, concurrently, more I/O ports to a z990 server by either:
Enabling additional ports on the already installed I/O cards via LIC-CC.
LIC-CC-only upgrades can be done for ESCON channels and ISC-3 links, activating ports
on the existing 16-port ESCON or ISC-3 daughter (ISC-D) cards.
Installing additional I/O cards on an already installed I/O cage’s slots.
The installed I/O cage(s) must provide the number of I/O slots required by the target
configuration.
Figure 8-3 on page 193 shows an example of CUoD for I/O via LIC-CC.
Figure 8-3 CUoD for I/O LIC-CC upgrade example
Note: I/O cages cannot be installed concurrently.
ABAB
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06
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A
B
ABCDCD CDCD
bottom
D
I/O Domain #
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I/O Cage
16-port ESCON cards
16 ESCON
channels
(2 x 8)
24 ESCON
channels
(2 x 12)
spare
ports
CUoD
+ 8 ESCON
channels
