IBM z/OS Coupling Facility CF Level of Support

54

CF Level Function

13 Protocol used with ﬁ ber channel expected to be

more efﬁ cient than ESCON

Helps lower Total Cost of Ownership (TCO)

Only 2 cross site FCP links / ESS required for

most workloads

Can provide better performance

Able to increase distance between sites while

maintaining acceptable application performance

One protocol exchange vs. 2-3 with ESCO

12 64-bit support for Coupling Facility, CF Duplexing

Toleration for >15 LPAR ID on z990

Enhanced Storage Protect

DB2 Performance

Message Time Ordering

11 9672 G5/G6 CF Duplexing

Toleration for >15 LPAR IDs on z990

10 z900 GA2 support

9 MQSeries® shared message queues

WLM Multi-system Enclave Support

Intelligent Resource Director**

IC-3/ISC-3/ICB-3 Peer Mode**

8 Dynamic ICF expansion into shared ICF pool

Systems-Managed Rebuild

7 Shared ICF par titions on server models

DB2 Delete Name optimization

6 ICB & IC

TPF support

5 DB2 cache structure duplexing

DB2 castout performance improvement

Dynamic ICF expansion into shared CP pool*

4 Per formance optimization for IMS & VSAM RLS

Dynamic CF Dispatching

Internal Coupling Facility*

IMS shared message queue extensions

3 IMS shared message queue base

2 DB2 performance

VSAM RLS

255 Connectors/1023 structures for IMS Batch

DL1 (non-BMP)

1 Dynamic Alter support

CICS temporary storage queues

System Logger

Notes:

–

G5 base CF level code is CF Level 6 and can be upgraded to CF Level 11

–

G6 base CF level code is CF Level 8 and can be upgraded to CF Level 11

– z900 base CF level code is CF Level 9

– z800 and z990 base CF level code is CF Level 12

–

Detailed information regarding CF Levels can be found in Coupling Facility

Level (CF LEVEL) Considerations at ibm.com/s390/pso/cftable.html

*G3, G4, G5 and G6 only

**zSeries required

Please note that although a particular back level machine may be updated

to a more current CFCC level, NOT all the functions of that CFCC level may

be able to run on that hardware platform, i.e., G3/G4 can be upgraded to

CF Level 8 but it cannot use dynamic ICF expansion into shared ICF pool.

Fiber-Optic Cabling and System Connectivity

In the world of open systems and Storage Area Networks

(SANs), the changing requirements for ﬁ ber-optic cabling

are directly related to the system hardware conﬁ guration.

As industry-standard protocols and higher data rates con-

tinue to be embraced in these environments, the ﬁ ber-

optic

cabling options can become numerous and complex.

Today’s marketplace is evolving towards new Small Form

Factor (SFF) ﬁ ber-optic connectors, short wavelength (SX)

and long wavelength (LX) laser transceivers, and increas-

ing link speeds from one Gigabit per second (Gbps) to 10

Gbps. New industry-standard SFF ﬁ ber optic connectors

and transceivers are utilized on the zSeries ESCON and

FICON Express features, on the ISC-3 feature, and on the

zSeries ETR feature. These new features must coexist with

the current infrastructure that utilizes a different “family” of

ﬁ ber-optic connectors and transceivers.

As a result of this complex and continually changing land-

scape, IBM is providing you with multiple ﬁ ber cabling

services options to provide ﬂ exibility in meeting your ﬁ ber

cabling needs.

IBM Network Integration and Deployment Services for

zSeries ﬁ ber cabling (zSeries ﬁ ber cabling services)

enables businesses to choose the zSeries conﬁ guration

that best matches their computing environment without

having to worry about planning and implementing the

ﬁ ber optic cabling. By teaming with IBM, businesses can

receive a world-class solution for their zSeries ﬁ ber con-

nectivity requirements, including consulting and project

management, as well as the ﬁ ber-optic jumper cables and

installation to complete the zSeries integration.