6947ch06.fm Draft Document for Review April 7, 2004 6:15 pm
150 IBM eServer zSeries 990 Technical Guide
6.8 Workload License Charges
Workload License Charges (WLC) is a software license charge method introduced with the
z/Architecture.
WLC requires zSeries server(s) running z/OS operating system(s) in 64-bit mode. All
MVS-type operating system images running in the zSeries server must be z/OS. Any mix of
z/OS, z/VM, Linux, VM/ESA, VSE/ESA and TPF images is allowed, but no OS/390 image can
exist.
There are two WLC license types:
򐂰Flat WLC (FWLC) - Software products licensed under FWLC are charged per copy basis,
one copy for each zSeries server, independently of the server’s capacity (MSUs).
򐂰Variable WLC (VWLC) - VWLC software products can be charged in two different ways:
– Full-capacity. The server’s total number of MSUs is used for charging. Full-capacity is
applicable when the server is not eligible for Sub-capacity.
– Sub-capacity Software charges are based on the logical partition’s utilization where the
product is running.
WLC Sub-capacity allows software charges based on logical partition utilizations instead of
the server’s total number of MSUs. Sub-capacity removes the dependency between software
charges and server (hardware) installed capacity.
Sub-capacity is based on the logical partition’s rolling 4-hour average utilization. It is not
based on the utilization of each product, but on the utilization of the logical partition or
partitions where it runs. The VWLC licensed products running on a logical partition will be
charged by the maximum value of this partition’s rolling 4-hour average utilization within a
month.
The logical partitions’ rolling 4-hour average utilization can be limited by a “Defined Capacity”
definition on the partitions’ image profiles. This activates the “Soft Capping” function of
PR/SM, avoiding 4-hour average partition utilizations above the defined capacity value. Soft
capping controls the maximum rolling 4-hour average utilization (the “last” 4-hour average
value at every 5 minutes interval), but does not control the maximum “instantaneous” partition
utilization.
d. z/VM V4.3 only.
e. z/VM 4.3 only with PTF for APAR VM63397.
f. PUT 16.
g. For z/VM install, IPL, and operation from SCSI disks.
h. z/VM V4.3 only. For Linux as a guest.
i. Planned for z/VSE V3.1 only (for FCP attached SCSI disks on the IBM ESS).
j. See //http:www10.software.inm.com/developerworks/opensource/linux390.
k. z/VM IPL from SCSI disks.
l. For Linux as a guest.
m. PUT 13 with PTF for APAR PJ2733.
n. With PTF for APAR VM63405.
o. For one global VLAN ID for IPv6 (applies to OSA-Express 1000BASE-T Ethernet, Fast Ethernet, and GbE).
p. For one global VLAN ID for IPv4 (applies to OSA-Express 1000BASE-T Ethernet, Fast Ethernet, and GbE).
q. Applies to OSA-Express 1000BASE-T Ethernet, Fast Ethernet, and GbE with CHPID type OSD.
r. Applies to all OSA-Express features in QDIO mode (CHPID type OSD).
s. z/VM V4.3 only, applies to all OSA-Express features in QDIO mode (CHPID type OSD).
t. Applies to performance data, Get and GetNext, and Ethernet data for dot3StatsTable in QDIO mode, CHPID Type
OSD.