IBM eServer zSeries 900 Technical Guide

74 IBM eServer zSeries 900 Technical Guide

Table 3-3 ESCON and FICON characteristics

Those differences, along with the addressing capabilities, may affect configuration complexity,

topology, infrastructure, and performance.

3.1.2 Channel features support

Table 3-4 summarizes all the available channel features on z900 general purpose and

capacity servers, the maximum number of channels for each type, the number of I/O slots

required to achieve this number, and the channel increments.

ESCON channels FICON channels

(FC or FCP modes)

Command execution Synchronous to CU Asynchronous to CU

Channel concurrent I/O operations 1 up to 32

Link rate 200 Mbit/sec 1.0625 Gbit/sec

Channel frame transfer buffer 2 KBytes 128 KBytes

Max distance without repeat 3 Km 10 Km (20 Km RPQ)

Max distance without droop 9 Km 100 Km

Chapter 3. Connectivity 75

Table 3-4 Channel features support

Table notes:

1. The ESCON 16-port card feature code is 2323, while individual ESCON ports are ordered in in-

crements of four using feature code 2324.

2. The maximum of 176 ESCON channels packaged on ESCON-4 port cards can only be achieved

on upgrades from 9672 G5/G6 to z900 general purpose or capacity models when the 9672 al-

ready has 176 ESCON channels or more, with no OSA-2 and no parallel channels installed or

Channel feature Feature codes

Number of Maximum number

I/O

cage

(FC)

CHPID

definition

Notes

Ports/

card

Channel

increments

Channels

I/O

slots

ESCON 16-port

(1 spare port)

2323

(2324)

15 4

(LIC-CC)

256 18 2023 CNC, CVC,

CTC, CBY

Note 1

ESCON 4-port 2313 4 4 176 44 2022 CNC, CVC,

CTC, CBY

Note 2

FICON Express

(SX / LX)

2320 / 2319 2 2 96 48 2023 FC, FCV,

FCP

Note 3

FICON

(SW / LW)

2318 / 2315 2 2 96 48 2023 FC, FCV,

FCP

Note 3

Hipersockets - - 1 4 0 - IQD Note 4

IC-3 - - 2 32 0 - ICP Note 4

ICB

(333 MByte/sec)

0992 - 1 8 0 - CBS, CBR Notes 5, 7

ICB-3

(1 GByte/sec)

0993 - 1 16 0 - CBP Notes 5, 7

ISC-3

(2 Gbit/sec)

0217 (ISC-M)

0218 (ISC-D)

(0219)

21

(LIC-CC)

32 8 2023 CFP

CFS, CFR

Notes 6, 7

ISC-3 20km support

(1 Gbit/sec)

RPQ 8P2197

(ISC-D)

2 2 32 8 2023 CFP

CFS, CFR

Notes 6, 7

OSA-2 FDDI 5202 2 1 12 12 2022 OSD Note 9

OSA-2 TR 5201 2 1 12 12 2022 OSD Note 9

OSA-E ATM

(SM / MM)

2362 / 2363 2 2 24 12 2023 OSE, OSD Notes 3, 8

OSA-E Fast

Ethernet

2366 2 2 24 12 2023 OSE, OSD Notes 3, 8

OSA-E Gbit

Ethernet (SX / LX)

2365 / 2364 2 2 24 12 2023 OSE Notes 3, 8

OSA-E TR 2367 2 2 24 12 2023 OSE, OSD Notes 3, 8

Parallel 3-port 2304 3 3 96 32 2022 BL, BY Note 12

Parallel 4-port 2303 4 4 88 22 2022 BL, BY Note 10

PCICA 0862 2 2 12 6 2023 - Notes 3,

11

PCICC 0861 2 2 16 8 2023 - Notes 3,

11