Chapter 3. I/O system structure 99
Draft Document for Review April 7, 2004 6:15 pm 6947ch03.fm
Notes:
1. The total number of FICON Express, OSA-Express, PCIXCC, and PCICA cards cannot
exceed 20 per I/O cage.
2. The sum of OSA-Express GbE, 1000BASE-T Ethernet, Fast Ethernet and Token Ring
cards cannot exceed 24.
3. OSA-Express GbE LX/SX (FC 2364 and 2365) and OSA-Express Fast Ethernet (FC
2366) can only be brought forward on an upgrade; new adapters cannot be ordered.
OSA-Express GbE LX (feature code 1364)
The z990 OSA-Express Gigabit (GbE) Long Wavelength (LX) feature (feature code 1364)
occupies one slot in the z990 I/O cage and has two independent ports, with one PCHID
associated with each port.
Each port supports connection to a 1 Gbps Ethernet LAN via 9 micron single-mode fiber optic
cable terminated with an LC Duplex connector. This feature utilizes a long wavelength (LX)
laser as the optical transceiver.
Multimode (62.5 or 50 micron) fiber cable may be used with the z990 OSA-Express GbE LX
feature. The use of these multimode cable types requires a mode conditioning patch (MCP)
cable to be used at each end of the fiber link. Use of the single-mode to multimode MCP
cables reduces the supported optical distance of the link to a maximum end-to-end distance
of 550 meters.
The z990 OSA-Express GbE LX feature (feature code 1364) supports Queued Direct
Input/Output (QDIO) mode only, full-duplex operation, jumbo frames , and checksum off load. It
is defined with CHPID type OSD.
OSA-Express GbE SX (feature code 1365)
The z990 OSA-Express Gigabit (GbE) Short Wavelength (SX) feature (feature code 1365)
occupies one slot in the z990 I/O cage and has two independent ports, with one PCHID
associated with each port.
Each port supports connection to a 1 Gbps Ethernet LAN via 62.5 micron or 50 micron
multimode fiber optic cable terminated with an LC Duplex connector. The feature utilizes a
short wavelength (SX) laser as the optical transceiver.
The z990 OSA-Express GbE SX feature (feature code 1365) supports Queued Direct
Input/Output (QDIO) mode only, full-duplex operation, jumbo frames , and checksum off load. It
is defined with CHPID type OSD.
OSA-Express GbE LX (feature code 2364, upgrade only)
The z990 OSA-Express GbE LX feature (feature code 2364) can only be brought forward on
an upgrade. Its replacement adapter for new orders is the z990 OSA-Express GbE LX feature
(feature code 1364).
OSA-E Fast Ethernet 2366 2 2 24 12 yes OSE, OSD 1, 2, 3
OSA-E Token Ring 2367 2 2 48 24 yes OSE, OSD 1, 2
I/O feature Feature codes
Number of Maximum number
PCHID CHPID
definition
Config.
rules
notes
Ports
per card Ports
increments Ports I/O
slots