IBM z/OS manual Z990 Frame and I/O Configuration Content Planning for I/O, General Information

z990 Frame and I/O Configuration 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.

Z-Frame A-Frame

		Single
	CEC	I/O cage
	I/O
	Cage
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.

Z-Frame A-Frame

				2
			CEC	I/O cages
	2nd		1st
	I/O Cage		I/O Cage
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.

Z-Frame A-Frame

				3
	3rd
			CEC	I/O cages
	I/O Cage
	2nd		1st
	I/O Cage	I/O Cage
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.

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