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Why does nimadm install more filesets than a traditional migration (using media)?

Question & Answer


Question

Why does nimadm install more filesets than a traditional migration (using media)?

We noticed that if we migrate a system from AIX 7.2 to 7.3 using nimadm that many additional (devices.msg) filesets are installed by the nimadm process. But this does not happen if we migrate using media (using a virtual CD device for example).

Using our dev system as an example. The AIX version/level before migration is 7200-05-09-2446. The AIX version/level after migration is 7300-03-00-2446. When we migrate from AIX 7.2 to 7.3 using a media, 593 filesets are installed. When we migrate from AIX 7.2 to 7.3 using nimadm, 792 filesets are installed. That's an additional 136 filesets that are installed by nimadm. A list of the additional filesets installed is shown below.

For now we have simply chosen to remove these extra devices.msg filesets immediately after nimadm migration. However, we would like to understand why this happens (with nimadm specifically) and if we can prevent it from happening again in the future.

The nimadm command used for the migration is, nimadm -j nimadmvg -c an39lpar -s spotAIX73TL3SP0 -l AIX73TL3SP0 -d hdisk1 -Y -A.

# comm -13 media.txt nimadm.txt > nimadm.only.txt

devices.msg.CA_ES.base.com
devices.msg.CA_ES.diag.rte
devices.msg.CA_ES.rspc.base.com
devices.msg.CA_ES.sys.mca.rte
devices.msg.CS_CZ.base.com
devices.msg.CS_CZ.diag.rte
devices.msg.CS_CZ.rspc.base.com
devices.msg.CS_CZ.sys.mca.rte
devices.msg.DE_DE.base.com
devices.msg.DE_DE.diag.rte
devices.msg.DE_DE.rspc.base.com
devices.msg.DE_DE.sys.mca.rte
devices.msg.EN_US.base.com
devices.msg.EN_US.diag.rte
devices.msg.EN_US.rspc.base.com
devices.msg.EN_US.sys.mca.rte
devices.msg.ES_ES.base.com
devices.msg.ES_ES.diag.rte
devices.msg.ES_ES.rspc.base.com
devices.msg.ES_ES.sys.mca.rte
devices.msg.FR_FR.base.com
devices.msg.FR_FR.diag.rte
devices.msg.FR_FR.rspc.base.com
devices.msg.FR_FR.sys.mca.rte
devices.msg.HU_HU.base.com
devices.msg.HU_HU.diag.rte
devices.msg.HU_HU.rspc.base.com
devices.msg.HU_HU.sys.mca.rte
devices.msg.IT_IT.base.com
devices.msg.IT_IT.diag.rte
devices.msg.IT_IT.rspc.base.com
devices.msg.IT_IT.sys.mca.rte
devices.msg.JA_JP.base.com
devices.msg.JA_JP.diag.rte
devices.msg.JA_JP.rspc.base.com
devices.msg.JA_JP.sys.mca.rte
devices.msg.Ja_JP.base.com
devices.msg.Ja_JP.diag.rte
devices.msg.Ja_JP.rspc.base.com
devices.msg.Ja_JP.sys.mca.rte
devices.msg.KO_KR.base.com
devices.msg.KO_KR.diag.rte
devices.msg.KO_KR.rspc.base.com
devices.msg.KO_KR.sys.mca.rte
devices.msg.PL_PL.base.com
devices.msg.PL_PL.diag.rte
devices.msg.PL_PL.rspc.base.com
devices.msg.PL_PL.sys.mca.rte
devices.msg.PT_BR.base.com
devices.msg.PT_BR.diag.rte
devices.msg.PT_BR.rspc.base.com
devices.msg.PT_BR.sys.mca.rte
devices.msg.RU_RU.base.com
devices.msg.RU_RU.diag.rte
devices.msg.RU_RU.rspc.base.com
devices.msg.RU_RU.sys.mca.rte
devices.msg.SK_SK.base.com
devices.msg.SK_SK.diag.rte
devices.msg.SK_SK.rspc.base.com
devices.msg.SK_SK.sys.mca.rte
devices.msg.ZH_CN.base.com
devices.msg.ZH_CN.diag.rte
devices.msg.ZH_CN.rspc.base.com
devices.msg.ZH_CN.sys.mca.rte
devices.msg.ZH_TW.base.com
devices.msg.ZH_TW.diag.rte
devices.msg.ZH_TW.rspc.base.com
devices.msg.ZH_TW.sys.mca.rte
devices.msg.Zh_CN.base.com
devices.msg.Zh_CN.diag.rte
devices.msg.Zh_CN.rspc.base.com
devices.msg.Zh_CN.sys.mca.rte
devices.msg.Zh_TW.base.com
devices.msg.Zh_TW.diag.rte
devices.msg.Zh_TW.rspc.base.com
devices.msg.Zh_TW.sys.mca.rte
devices.msg.ca_ES.base.com
devices.msg.ca_ES.diag.rte
devices.msg.ca_ES.rspc.base.com
devices.msg.ca_ES.sys.mca.rte
devices.msg.cs_CZ.base.com
devices.msg.cs_CZ.diag.rte
devices.msg.cs_CZ.rspc.base.com
devices.msg.cs_CZ.sys.mca.rte
devices.msg.de_DE.base.com
devices.msg.de_DE.diag.rte
devices.msg.de_DE.rspc.base.com
devices.msg.de_DE.sys.mca.rte
devices.msg.es_ES.base.com
devices.msg.es_ES.diag.rte
devices.msg.es_ES.rspc.base.com
devices.msg.es_ES.sys.mca.rte
devices.msg.fr_FR.base.com
devices.msg.fr_FR.diag.rte
devices.msg.fr_FR.rspc.base.com
devices.msg.fr_FR.sys.mca.rte
devices.msg.hu_HU.base.com
devices.msg.hu_HU.diag.rte
devices.msg.hu_HU.rspc.base.com
devices.msg.hu_HU.sys.mca.rte
devices.msg.it_IT.base.com
devices.msg.it_IT.diag.rte
devices.msg.it_IT.rspc.base.com
devices.msg.it_IT.sys.mca.rte
devices.msg.ja_JP.base.com
devices.msg.ja_JP.diag.rte
devices.msg.ja_JP.rspc.base.com
devices.msg.ja_JP.sys.mca.rte
devices.msg.ko_KR.base.com
devices.msg.ko_KR.diag.rte
devices.msg.ko_KR.rspc.base.com
devices.msg.ko_KR.sys.mca.rte
devices.msg.pl_PL.base.com
devices.msg.pl_PL.diag.rte
devices.msg.pl_PL.rspc.base.com
devices.msg.pl_PL.sys.mca.rte
devices.msg.pt_BR.base.com
devices.msg.pt_BR.diag.rte
devices.msg.pt_BR.rspc.base.com
devices.msg.pt_BR.sys.mca.rte
devices.msg.ru_RU.base.com
devices.msg.ru_RU.diag.rte
devices.msg.ru_RU.rspc.base.com
devices.msg.ru_RU.sys.mca.rte
devices.msg.sk_SK.base.com
devices.msg.sk_SK.diag.rte
devices.msg.sk_SK.rspc.base.com
devices.msg.sk_SK.sys.mca.rte
devices.msg.zh_CN.base.com
devices.msg.zh_CN.diag.rte
devices.msg.zh_CN.rspc.base.com
devices.msg.zh_CN.sys.mca.rte
devices.msg.zh_TW.base.com
devices.msg.zh_TW.diag.rte
devices.msg.zh_TW.rspc.base.com
devices.msg.zh_TW.sys.mca.rte

# cat nimadm.only.txt | wc -l

136

Before nimadm migration (7200-05-09-2446):

# lslpp -l devices.msg*
Fileset Level State Description

Path: /usr/lib/objrepos
devices.msg.en_US.base.com
7.2.5.0 COMMITTED Base Sys Device Software Msg -
U.S. English
devices.msg.en_US.diag.rte
7.2.5.0 COMMITTED Device Diagnostics Messages -
U.S. English
devices.msg.en_US.rspc.base.com
7.2.5.0 COMMITTED RISC PC Software Messages -
U.S. English
devices.msg.en_US.sys.mca.rte
7.2.5.0 COMMITTED Micro Channel Bus Software Msg
- U.S. English

After nimadm migration (7300-03-00-2446):

# lslpp -l devices.msg*
Fileset Level State Description

Path: /usr/lib/objrepos
devices.msg.CA_ES.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Catalan (UTF)
devices.msg.CA_ES.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Catalan (UTF)
devices.msg.CA_ES.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Catalan (UTF)
devices.msg.CA_ES.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Catalan (UTF)
devices.msg.CS_CZ.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Czech (UTF)
devices.msg.CS_CZ.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Czech (UTF)
devices.msg.CS_CZ.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Czech (UTF)
devices.msg.CS_CZ.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Czech (UTF)
devices.msg.DE_DE.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
German (UTF)
devices.msg.DE_DE.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
German (UTF)
devices.msg.DE_DE.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
German (UTF)
devices.msg.DE_DE.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- German (UTF)
devices.msg.EN_US.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
U.S. English (UTF)
devices.msg.EN_US.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
U.S. English (UTF)
devices.msg.EN_US.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
U.S. English (UTF)
devices.msg.EN_US.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- U.S. English (UTF)
devices.msg.ES_ES.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Spanish (UTF)
devices.msg.ES_ES.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Spanish (UTF)
devices.msg.ES_ES.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Spanish (UTF)
devices.msg.ES_ES.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Spanish (UTF)
devices.msg.FR_FR.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
French (UTF)
devices.msg.FR_FR.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
French (UTF)
devices.msg.FR_FR.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
French (UTF)
devices.msg.FR_FR.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- French (UTF)
devices.msg.HU_HU.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Hungarian (UTF)
devices.msg.HU_HU.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Hungarian (UTF)
devices.msg.HU_HU.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Hungarian (UTF)
devices.msg.HU_HU.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Hungarian (UTF)
devices.msg.IT_IT.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Italian (UTF)
devices.msg.IT_IT.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Italian (UTF)
devices.msg.IT_IT.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Italian (UTF)
devices.msg.IT_IT.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Italian (UTF)
devices.msg.JA_JP.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Japanese (UTF)
devices.msg.JA_JP.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Japanese (UTF)
devices.msg.JA_JP.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Japanese (UTF)
devices.msg.JA_JP.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Japanese (UTF)
devices.msg.Ja_JP.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Japanese
devices.msg.Ja_JP.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Japanese
devices.msg.Ja_JP.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Japanese
devices.msg.Ja_JP.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Japanese
devices.msg.KO_KR.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Korean (UTF)
devices.msg.KO_KR.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Korean (UTF)
devices.msg.KO_KR.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Korean (UTF)
devices.msg.KO_KR.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Korean (UTF)
devices.msg.PL_PL.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Polish (UTF)
devices.msg.PL_PL.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Polish (UTF)
devices.msg.PL_PL.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Polish (UTF)
devices.msg.PL_PL.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Polish (UTF)
devices.msg.PT_BR.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Brazilian Portuguese (UTF)
devices.msg.PT_BR.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Brazilian Portuguese (UTF)
devices.msg.PT_BR.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Brazilian Portuguese (UTF)
devices.msg.PT_BR.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Brazilian Portuguese (UTF)
devices.msg.RU_RU.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Russian (UTF)
devices.msg.RU_RU.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Russian (UTF)
devices.msg.RU_RU.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Russian (UTF)
devices.msg.RU_RU.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Russian (UTF)
devices.msg.SK_SK.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Slovak (UTF)
devices.msg.SK_SK.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Slovak (UTF)
devices.msg.SK_SK.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Slovak (UTF)
devices.msg.SK_SK.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Slovak (UTF)
devices.msg.ZH_CN.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Simplified Chinese (UTF)
devices.msg.ZH_CN.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Simplified Chinese (UTF)
devices.msg.ZH_CN.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Simplified Chinese (UTF)
devices.msg.ZH_CN.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Simplified Chinese (UTF)
devices.msg.ZH_TW.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Traditional Chinese (UTF)
devices.msg.ZH_TW.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Traditional Chinese (UTF)
devices.msg.ZH_TW.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Traditional Chinese (UTF)
devices.msg.ZH_TW.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Traditional Chinese (UTF)
devices.msg.Zh_CN.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Simplified Chinese (GBK)
devices.msg.Zh_CN.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Simplified Chinese (GBK)
devices.msg.Zh_CN.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Simplified Chinese (GBK)
devices.msg.Zh_CN.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Simplified Chinese (GBK)
devices.msg.Zh_TW.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Traditional Chinese (big5)
devices.msg.Zh_TW.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Traditional Chinese (big5)
devices.msg.Zh_TW.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Traditional Chinese (big5)
devices.msg.Zh_TW.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Traditional Chinese (big5)
devices.msg.ca_ES.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Catalan
devices.msg.ca_ES.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Catalan
devices.msg.ca_ES.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Catalan
devices.msg.ca_ES.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Catalan
devices.msg.cs_CZ.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Czech
devices.msg.cs_CZ.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Czech
devices.msg.cs_CZ.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Czech
devices.msg.cs_CZ.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Czech
devices.msg.de_DE.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
German
devices.msg.de_DE.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
German
devices.msg.de_DE.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
German
devices.msg.de_DE.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- German
devices.msg.en_US.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
U.S. English
devices.msg.en_US.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
U.S. English
devices.msg.en_US.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
U.S. English
devices.msg.en_US.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- U.S. English
devices.msg.es_ES.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Spanish
devices.msg.es_ES.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Spanish
devices.msg.es_ES.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Spanish
devices.msg.es_ES.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Spanish
devices.msg.fr_FR.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
French
devices.msg.fr_FR.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
French
devices.msg.fr_FR.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
French
devices.msg.fr_FR.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- French
devices.msg.hu_HU.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Hungarian
devices.msg.hu_HU.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Hungarian
devices.msg.hu_HU.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Hungarian
devices.msg.hu_HU.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Hungarian
devices.msg.it_IT.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Italian
devices.msg.it_IT.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Italian
devices.msg.it_IT.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Italian
devices.msg.it_IT.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Italian
devices.msg.ja_JP.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Japanese IBM-eucJP
devices.msg.ja_JP.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Japanese IBM-eucJP
devices.msg.ja_JP.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Japanese IBM-eucJP
devices.msg.ja_JP.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Japanese IBM-eucJP
devices.msg.ko_KR.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Korean
devices.msg.ko_KR.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Korean
devices.msg.ko_KR.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Korean
devices.msg.ko_KR.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Korean
devices.msg.pl_PL.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Polish
devices.msg.pl_PL.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Polish
devices.msg.pl_PL.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Polish
devices.msg.pl_PL.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Polish
devices.msg.pt_BR.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Brazilian Portuguese
devices.msg.pt_BR.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Brazilian Portuguese
devices.msg.pt_BR.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Brazilian Portuguese
devices.msg.pt_BR.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Brazilian Portuguese
devices.msg.ru_RU.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Russian
devices.msg.ru_RU.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Russian
devices.msg.ru_RU.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Russian
devices.msg.ru_RU.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Russian
devices.msg.sk_SK.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Slovak
devices.msg.sk_SK.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Slovak
devices.msg.sk_SK.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Slovak
devices.msg.sk_SK.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Slovak
devices.msg.zh_CN.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
Simplified Chinese
devices.msg.zh_CN.diag.rte
7.3.3.0 COMMITTED Device Diagnostics Messages -
Simplified Chinese
devices.msg.zh_CN.rspc.base.com
7.3.3.0 COMMITTED RISC PC Software Messages -
Simplified Chinese
devices.msg.zh_CN.sys.mca.rte
7.3.3.0 COMMITTED Micro Channel Bus Software Msg
- Simplified Chinese
devices.msg.zh_TW.base.com
7.3.3.0 COMMITTED Base Sys Device Software Msg -
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Answer

nimadm (NIM Alternate Disk Migration) uses a fundamentally different and more robust installation method than a traditional media-based migration. During a nimadm migration, AIX is first installed as a fresh Base Operating System (BOS) on an alternate disk using NIM SPOT and LPP_SOURCE resources. This ensures that all Base OS components at the target AIX level are installed cleanly and consistently. As part of this process, NIM performs strict prerequisite and dependency validation, which results in the installation of additional BOS, runtime, networking, security, serviceability, and device-support filesets that may not have been present or fully installed on the original system.

Where as in traditional media-based migration upgrades the existing root volume group in place and retains many previously installed filesets, even if they are minimal, outdated, or partially installed. Additionally, newer AIX versions have modularized and split several older monolithic filesets into multiple smaller components, which increases the total fileset count without increasing functionality. Because the NIM SPOT is designed to support multiple hardware platforms and migration scenarios, it may also include broader device and support filesets than installation media.

As a result, the higher number of filesets observed after a nimadm migration is expected, fully supported by IBM, and indicates a cleaner, dependency-complete AIX environment, not software bloat or misconfiguration.

Please refer to the following document for more information about nimadm.

https://www.ibm.com/support/pages/using-nim-alternate-disk-migration-nimadm

 

Reference case: TS020985637

[{"Type":"MASTER","Line of Business":{"code":"LOB08","label":"Cognitive Systems"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG10","label":"AIX"},"ARM Category":[{"code":"a8m0z000000cvz2AAA","label":"Install-\u003ENIM"}],"ARM Case Number":"TS020985637","Platform":[{"code":"PF002","label":"AIX"}],"Version":"5.3.0;6.1.0;7.1.0;7.2.0;7.3.0"}]

Document Information

Modified date:
15 December 2025

UID

ibm17254819

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