The following list of questions can help you determine whether the IBM S/390 Integrated Server is
right for your business.You will need to refer to other sections of this document to complete
some of your answers.At the end of the worksheet, you will know
If it is right for you
If it is not right for you or
If you need to contact your authorized Business Partner for further analysis
1. Specify the amount of disk storage (GB) you need for your planned environment.Assume the use of
18GB disk drives.
a. Up to 255GB ( See “DASD/Disk Storage” on page23.)
2. Specify the total number of lines per minute required for printing.
a. Fewer
than 3000
b. Between 3000 and 25000 (See “Data Movement” on on page22.)
c. Between 25000 and 50000 (See “Data Movement” on on page22.)
d. Greater than 50000
3. MVS: How many MVS/TSO application development users are supported?
a. Fewer
than 50
b. Between 50 and 90(See “MVS and OS/390 Performance” on page29.)
c. More than 90
4. VM: How many VM application development users are supported?
a. Fewer
than 250
b. Between 250 and 350(See “VM/CMS Performance” on page32.)
c. More than 350
5. If you are running an interactive, database workload what is the expected average disk I/O rate (I/O
operations per second)?
a. Fewer
than 100
b. Between 100 and 150 (See “VSE/CICS Performance” on page34.)
c. Between 150 and 400 (see “Disk I/O Performance and Caching” on page24.)
d. More than 400
6. How many communication lines do you require?
a. 16 or fewer (VM and VSE),4 or fewer (MVS)
b. More than 16 (VM or VSE), more than 4 (MVS) (See “Communication Controllers” on page26.)
Copyright IBM Corp. 1998 15

7. If you plan to replace an machine, what are you replacing (assumption: light I/O, see “VSE/CICS
Performance” on page34.)?
a. A 4331, 4341, 4361, 4381-11, 4381-21, 4381-23, 4381-90E, 4381-91E, 9373, 9375, 9377,
9221-120, 9221-130, or 9221-150
b. A 4381-24, 9221-170, 9121-180 or larger capacity models which are under-utilized
(See AppendixB, Customer Examples” on page37)
c. A 4381-24, 9221-170, 9121-180, or larger capacity model which are near or fully utilized
8. Do you have a critical time requirement for your batch window?
b. Yes (See “Recommendations and Guidelines” on page21.)
9. What Enhanced P/390 memory size is required for your workload to run on the IBM S/390 Integrated
a. Up to 256MB
b. Greater than 256MB and can use S/390 Expanded Storage to satisfy the requirement
(See “System Memory Size” on page25.)
d. Requires more than 256MB and S/390 Expanded Storage cannot satisfy the requirement
10. Does your planned workload fit with anticipated growth over your investment period?Refer to
Appendix A, “Performance” on page29 for more information.
11. Do you require more than 255 channel addresses for your system?
b. Yes, but some are local non-SNA terminals (See "Alternatives" on page22)
If you answered (a) to all of the above questions after reading all the pertinent information, a single
IBM S/390 Integrated Server looks like a good fit for you business.Call your authorized Business
Partner to place an order. Authorized Business Partners are the exclusive channel for these
If you answered (b) to any of the above questions, please refer to the specified section to
determine if your workload can run on the IBM S/390 Integrated Server.If the workload can run,
consider it an (a) answer, if not consider it a (d) answer.If you are still not able to determine the
feasibility of your workload with the additional information provided, consider it a (c) answer.
If you answered (c) to any of the above questions, further analysis is required.Your workload may
need to be split across multiple S/390 Integrated Servers.Use the appropriate contact in
Appendix E, “For More Information” on page45.
If you answered (d) to any of the above questions, the IBM S/390 Integrated Server is not a fit due
to the complexity involved managing the required number of systems and maintenance of the
platform. You should consider other S/390 processors.
16 S/390 Integrated Server
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