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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 partitions 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 Performance 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.
Coupling Facility — CF Level of Support