Updating your nim image
The following steps are followed when using the SMIT menus: Example 5-4 Creating a SPOT # smitty nim_mkres Select “spot = Shared Product Object Tree - equivalent to /usr file” Define a Resource Type or select values in entry fields. [Entry Fields] * Resource Name [SPOT-AIX5372] * Resource Type spot * Server of Resource [master] * Source of Install Images [LPP_AIX5372] (Hit F4 and select:) * Location of Resource [/nim_export/aix53/spot]/ EXPAND file systems if space needed? Check the usability of the lpp_source and SPOT as shown in Example 5-5. The levels of the filesets must match exactly (from my experience).
yes Comments  installp Flags COMMIT software updates? The following steps are followed when using the SMIT menus: After the lppsource and SPOT resources are updated and ready for use, you can perform software maintenance on NIM clients. After every server is updated, and some time has gone by, erase 5300-.
This operation enables you remove any duplicate software, superseded updates, unnecessary languages, and non-simage software.
And now, I just read APAR IZ03167, which seems to say do NOT do this. I have an lpp_source and SPOT that correspond to AIX level 5300-. I just downloaded all the filesets to upgrade my servers to level 5300-.Example 5-1 Creating an AIX 5L V5.3 5372 lpp_source Define a Resource Type or select values in entry fields. [Entry Fields] * Resource Name [LPP-AIX5372] * Resource Type lpp_source * Server of Resource [master] * Location of Resource [/nim_export/aix53/lpp_source/5372lpp_res] Architecture of Resource  Source of Install Images  / Names of Option Packages  Show Progress [yes] Comments  3.Update the TL05 to the LPP-AIX5372 resource as shown in Example 5-2.We will create the SPOT using the latest LPP-AIX5372 lpp_source. no Note: Run lsnim -l LPP-AIX5372 to check the Rstate and simages. Check After the updated lpp_source and SPOT are created, you can perform a NIM check operation to check the usability of these resources. You need both versions as long as you have severs at each level.Note: this will take quite a while to run, perhaps 30 minutes. Create the AIX 5L V5.3 TL05’s SPOT as shown in Example 5-4. When you perform the NIM check operation on the lpp_source resource, it rebuilds the table of contents (.toc) file in the lpp_source directory and checks whether all the necessary filesets are in the directory to qualify the lpp_source for the simage attribute. If you update your LPP_SOURCE and need to boot a server that has not been updated, you will not be able to boot.