IBM z/OS - Manual (Page 52)

52
z990 Frame and I/O Confi guration Content: Planning for I/O
The following diagrams show the capability and fl exibility
built into the I/O subsystem. All machines are shipped with
two frames, the A-Frame and the Z-Frame and can have
between one and three I/O cages. Each I/O cage has 28
I/O slots.
I/O Feature Type Features Maximum
ESCON 28 cards 420 channels
FICON Express 20 40 channels
OSA-Express 20 40 ports
PCIXCC 4 4
PCICA 2 4 cards
Maximum combined FICON Express, OSA-Express, PCICA/PCIXCC fea-
tures is 20.
I/O Feature Type Features Maximum
ESCON 35 cards 512 channels
FICON Express 40 80 channels
OSA-Express 24 48 ports
PCIXCC 4 4
PCICA 4 8 cards
Maximum combined FICON Express, OSA-Express, PCICA/PCIXCC fea-
tures is 40.
I/O Feature Type Features Maximum
ESCON 35 cards 0 channels
FICON Express 60 120 channels
OSA-Express 24 48 ports
PCIXCC 4 4
PCICA 6 12 cards
Maximum combined FICON Express, OSA-Express, PCICA/PCIXCC fea-
tures is 60.
General Information:
• ESCON confi gured in 4-port increments. Up to 28 chan-
nels in 2 cards, 60 channels in 4 cards, 88 channels in 6
cards.
• 120 in 8 cards, etc. up to a maximum 69 cards, 1024
channels.
• OSA-Express can be Gigabit Ethernet, 1000BASE-T
Ethernet or Token-Ring.
• Total number of PCIXCC / PCICA is 8 per system.
• If ICB-2 or ICB-3 are required on the system, these will
use up a single I/O slot for every 2 ICB-2 or ICB-3 to
accommodate the STI-2 and STI-3 cards.
A-Frame Z-Frame
Single
I/O cage
I/O
Cage
CEC
A-Frame Z-Frame
2
I/O cages
2nd
I/O Cage
1st
I/O Cage
CEC
A-Frame Z-Frame
3
I/O cages
2nd
I/O Cage
3rd
I/O Cage
1st
I/O Cage
CEC