Cuod for i/o, Concurrently, Cannot – IBM 990 User Manual
Page 207: Cuod for i/o can add, Be installed concurrently, Chapter 8. capacity upgrades, Figure 8-3 cuod for i/o lic-cc upgrade example, Cuod + 8 escon channels
Chapter 8. Capacity upgrades
195
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 that 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 shows an example of CUoD for I/O via LIC-CC.
Figure 8-3 CUoD for I/O LIC-CC upgrade example
A z990 server has 16 ESCON channels available, on two 16-port ESCON channel cards
installed in an I/O cage. Each channel card has eight ports enabled. In this example, eight
additional ESCON channels are concurrently added to the configuration by enabling, via
LIC-CC, using four unused ports on each ESCON channel card.
Note:
I/O cages
cannot
be installed concurrently.
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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