IBM RS/6000 SP, Handbook

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RS/6000 SP and Clustered IBM
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pSeries Systems Handbook
CES system with existing Enterprise Servers
In this case, you have to migrate these existing servers to CES. So, you have to
preserve the current content of these servers that are currently used for your
business.
Performing the steps described in Chapter 6, “Reconfiguring the RS/6000 SP
system” in IBM Parallel System Support Programs for AIX: Installation and
Migration Guide, GA22-7347, you can migrate your Enterprise Servers to a CES
system without reinstalling their software. These steps preserve your existing
software environment.
You have to pay attention to Step 9 and Step 18.
If you are considering migrating your CES system to an SP system in the future,
you have to use the
-n
flag on spframe command and to consider switch port
numbers for that environment.
10.4.4 Migration an existing SP system to a CES system
This is the case when you have an SP system with SP-attached servers and you
want to use all of your SP frames for other SP systems. Therefore, you remove
all of your SP frames from your SP system and manage the remaining
SP-attached servers as a CES system.
Assume your SP system has three SP frames (frames 1, 4, and 6) and three
SP-attached servers (frames 2, 3, and 5). You would like to remove all of the SP
frames from your SP system and create a CES system with all of the
SP-attached servers.
Planning consideration: By migrating your Enterprise Servers to a CES
system, you can manage them effectively and easily. However, you need to
consider other factors that will influence your migration plans:
򐂰 A CWS must run AIX 4.3.3 or later and PSSP 3.2 or later. We recommend:
AIX 4.3.3 with ML-08 (or later) and PSSP 3.2. with APAR IY16350 (or
later).
򐂰 All the Enterprise Servers in a CES system must be installed with one of
the combinations of AIX and PSSP that are supported for coexistence. We
recommend AIX 4.3.3. with ML-06 (or later) and PSSP 3.2. with APAR
IY13026 (or later) for M/T 7017 systems, respectively AIX 4.3.3 with ML-08
(or later) and PSSP 3.2. with APAR IY16350 (or later) for M/T 7026
systems.