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# Replace a node in subnet snjp4

Motivation: 
 - replacing dead node wzr5d-7qa2x-tduot-6mkkq-ou4sc-5ktje-4hxqa-a75d5-gunkc-3xhyt-6qe

Calculated potential impact on subnet decentralization if replacing:

- 1 additional node would result in: equal decentralization across all features

Based on the calculated potential impact, not replacing additional nodes to improve optimization.

Note: the information below is provided for your convenience. Please independently verify the decentralization changes rather than relying solely on this summary.
Here is [an explaination of how decentralization is currently calculated](https://dfinity.github.io/dre/decentralization.html), 
and there are also [instructions for performing what-if analysis](https://dfinity.github.io/dre/subnet-decentralization-whatif.html) if you are wondering if another node would have improved decentralization more.



Decentralization Nakamoto coefficient changes for subnet `snjp4-xlbw4-mnbog-ddwy6-6ckfd-2w5a2-eipqo-7l436-pxqkh-l6fuv-vae`:
```
    node_provider: 5.00 -> 5.00    (+0%)
      data_center: 5.00 -> 5.00    (+0%)
data_center_owner: 5.00 -> 5.00    (+0%)
             area: 5.00 -> 5.00    (+0%)
          country: 5.00 -> 5.00    (+0%)
```

**Mean Nakamoto comparison:** 5.00 -> 5.00  (+0%)

Overall replacement impact: equal decentralization across all features

Impact on business rules penalties: 1000 -> 0


# Details

Nodes removed:
- `wzr5d-7qa2x-tduot-6mkkq-ou4sc-5ktje-4hxqa-a75d5-gunkc-3xhyt-6qe` [health: dead]

Nodes added:
- `lrc24-ewvts-5ecwr-oitgj-2mrc3-elne2-otvv2-2b2kq-lj24z-jpvqq-eqe` [health: healthy]


```
    node_provider                                                         data_center       data_center_owner                               area                             country   
    -------------                                                         -----------       -----------------                               ----                             -------   
    6nbcy-kprg6-ax3db-kh3cz-7jllk-oceyh-jznhs-riguq-fvk6z-6tsds-rqe  1    ar1          1    Africa Data Centres                        1    British Columbia            1    AR       1
    7at4h-nhtvt-a4s55-jigss-wr2ha-ysxkn-e6w7x-7ggnm-qd3d5-ry66r-cae  1    bc1          1    Cloud9                                     1    CABA                        1    AU       1
    7ryes-jnj73-bsyu4-lo6h7-lbxk5-x4ien-lylws-5qwzl-hxd5f-xjh3w-mqe  1    ct1          1    Cyxtera                                    1    Cape Town                   1    CA       1
    7uioy-xitfw-yqcko-5gpya-3lpsw-dw7zt-dyyyf-wfqif-jvi76-fdbkg-cqe  1    fr2          1    Digital Realty                             1    Geneva                      1    CH       1
    bvcsg-3od6r-jnydw-eysln-aql7w-td5zn-ay5m6-sibd2-jzojt-anwag-mqe  1    ge1          1    Equinix                                    1    Hesse                       1    DE       1
    eipr5-izbom-neyqh-s3ec2-52eww-cyfpg-qfomg-3dpwj-4pffh-34xcu-7qe  1    hk1          1    Flexential                                 1    HongKong                    1    FR       1
    fwnmn-zn7yt-5jaia-fkxlr-dzwyu-keguq-npfxq-mc72w-exeae-n5thj-oae  1    lj1          1    HighDC                                     1    Ljubljana                   1    GE       1
    optdi-nwa4m-hly3k-6ua4n-sqyxf-yahvb-wps77-ddayn-r7zcz-edla5-7qe  1    mr1          1    Marvelous Web3 DC                          1    New Delhi                   1    HK       1
    r3yjn-kthmg-pfgmb-2fngg-5c7d7-t6kqg-wi37r-j7gy6-iee64-kjdja-jae  1    nd1          1    NEXTDC                                     1    Oregon                      1    IN       1
    s5nvr-ipdxf-xg6wd-ofacm-7tl4i-nwjzx-uulum-cugwb-kbpsa-wrsgs-cae  1    pl1          1    Posita.si                                  1    Provence-Alpes-Cote d'Azur  1    SG       1
    vegae-c4chr-aetfj-7gzuh-c23sx-u2paz-vmvbn-bcage-pu7lu-mptnn-eqe  1    sc1          1    SyT - Servicios y Telecomunicaciones S.A.  1    Queensland                  1    SI       1
    wdjjk-blh44-lxm74-ojj43-rvgf4-j5rie-nm6xs-xvnuv-j3ptn-25t4v-6ae  1    sg1          1    Telin                                      1    Singapore                   1    US       1
    wdnqm-clqti-im5yf-iapio-avjom-kyppl-xuiza-oaz6z-smmts-52wyg-5ae  1    tb1          1    Unicom                                     1    Tbilisi                     1    ZA       1
```


Business rules check results *before* the membership change:
- Subnet should have 1 DFINITY-owned node(s) for subnet recovery, got 0


Forum post link: https://forum.dfinity.org/t/replacing-nodes-in-subnet-snjp4/37671


Replace a node in subnet snjp4