Chapter 6. IBM iSeries 820, 830, and 840 models 197
6.4 Notes for iSeries Models 820, 830, and 840 overview
Note 1 Commercial Processing Workload (CPW) is used to measure the performance of all iSeries and AS/400e processors
announced from September 1996 onward. The CPW value is measured on maximum configurations. The type and number
of disk devices, the number of workstation controllers, the amount of memory, the system model, other factors, and the
application running determine what performance is achievable.
Processor performance represents the relative performance (maximum capacity) of a processor feature running CPW in a
client/server environment. Processor capacity is achievable when the commercial workload is not constrained by main
storage and direct access storage device (DASD). Performance of the 5250 CPW represents the relative performance
available to perform host-centric workloads. The amount of 5250 CPW capacity consumed reduces the available processor
capacity by the same amount.
Note 1a Mail and Calendar Users (MCU) is a relative performance measurement derived by performing mail and calendar functions
using Domino and Notes clients. The MCU workload represents users on a Notes client who are reading, updating or
deleting documents in an e-mail database. It also represents users who are performing lookups in the Domino directory and
scheduling calendar appointments and invitations. Reported values reflect 70% processor utilization to allow for growth and
peak loads in excess of client workload estimates.
On the Dedicated Servers for Domino, the Processor CPW is an approximate value reflecting the maximum amount of
non-Domino workload (10% to 15% of CPU) that is supported.
Note 2 The total number of tape drives does not increase.
Note 3 There must be one CD-ROM, DVD-ROM, or DVD-RAM per system.
Note 4 One line is used if the #5544 System Console on Operations Console is used. One line might be used if the #5546 System
Console on 100 Mbps Token Ring or #5548 System Console on 100 Mbps Ethernet is selected and the #0367 Operations
Console PCI Cable is connected.
Note 5a Includes the #5034 or #5035 Migration Tower I and all the SPD bus towers attached to the #5034 or #5035.
Note 5b Includes the #5077 Migration Tower II and all the SPD bus towers attached to the #5077 Migration Tower II.
Note 5c This column does not apply to Dedicated Domino Servers.
Note 6 New systems only. Does not apply to migrated systems.
Note 8 5250 CPW (Interactive) is an approximate value that reflects the amount of Processor CPW that can be used for workloads
performing 5250-based tasks. Remember that:
Any task that uses a 5250 data stream is considered 5250 online transaction processing (OLTP) work and requires
some amount of 5250 CPW to process no matter how the task was started.
A task submitted through a 5250 session (5250 device or 5250 emulation) that does display or printer I/O requires
5250 CPW.
A task submitted through a 5250 session (5250 device or 5250 emulation) as a “batch” job is not considered 5250
OLTP work and does not require any 5250 CPW unless the task does display or printer I/O.
Limited 5250 CPW is available when 5250 Interactive CPW = 0, for a system administrator who wants to use 5250
display device I/O to manage various aspects of the server. Multiple administrative jobs exceed this capability.
Note 9 Includes a base CD-ROM in the migration tower (no feature code).
Note 10 External DASD maximum assumes 35.16 GB LUNs. External DASD cannot exceed the maximum system capacity or the
maximum number of disk arms.
