IBM 990 - Manual (Page 105)

Chapter 3. I/O system structure 93
Table 3-9 lists the required connectors and cable types for each I/O feature on z990 servers.
Table 3-9 I/O features connectors and cables types
1. SM is single mode fiber.
2. MM is multimode fiber.
3. OSA-E refers to OSA-Express.
4. Brought forward to z990 on an upgrade only.
5. The OSA-Express GbE features brought forward from an upgrade have a different connector (SC
Duplex) than the new OSA-E GbE features.
6. 1000BASE-T is the new Ethernet feature.
7. UTP is Unshielded Twisted Pair.
8. STP is Shielded Twisted Pair.
3.4.2 ESCON channel
What follows are z990 connectivity options in the ESCON I/O interface environment.
z990 16-port ESCON feature
The z990 16-port ESCON feature (feature code 2323) occupies one I/O slot in the z990 I/O
cage. Each port on the feature uses a 1300 nanometer (nm) light-emitting diode (LED)
transceiver, designed to be connected to 62.5 micron multimode fiber optic cables only.
The feature has 16 ports with one PCHID associated with each port, up to a maximum of 15
active ESCON channels per feature. There is a minimum of one spare port per feature, to
allow for channel sparing in the event of a failure of one of the other ports.
The 16-port ESCON feature port utilizes a small form factor optical transceiver that supports
a new fiber optic connector called MT-RJ. The MT-RJ is an industry standard connector which
has a much smaller profile compared with the original ESCON Duplex connector. The MT-RJ
connector, combined with technology consolidation, allows for the much higher density
packaging implemented with the 16-port ESCON feature.
Feature code Feature name Connector type Cable type
0219 ISC-3 link LC Duplex 9 micron SM
1
6154 ETR MT-RJ 62.5 micron MM
2
2324 ESCON channel MT-RJ 62.5 micron MM
2319 FICON Express LX LC Duplex 9 micron SM
2320 FICON Express SX LC Duplex 50, 62.5 micron MM
1364 OSA-E GbE LX
3
LC Duplex 9 micron SM
2364 4 OSA-E GbE LX SC Duplex 5 9 micron SM
1365 OSA-E GbE SX LC Duplex 50, 62.5 micron MM
2365
4
OSA-E GbE SX SC Duplex
5
50, 62.5 micron MM
1366 OSA-E 1000BASE-T 6 RJ-45 Category 5 UTP 7
2366 4 OSA-E Fast Ethernet 6 RJ-45 Category 5 UTP
2367 OSA-E Token Ring RJ-45 UTP or STP
8