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improve details of the inventory

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policy/tpa-rfc-56-large-file-storage.md

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## Storage usage analysis



[According to Grafana][], TPA manages around 111TB of available

storage, with 71TB in use.

[According to Grafana][], TPA manages around 60TiB of storage with a

capacity of over 160TiB, which includes 60TiB of un-allocated space on

[LVM volume groups][]. 



TODO: redo the graphs in https://gitlab.torproject.org/tpo/tpa/team/-/issues/40478#note_2760208

About 40TiB of storage is used by the backup storage server and 7TiB

by the archive servers, which puts our normal disk usage at less than

15TiB spread over a little over 60 virtual machines.



[According to Grafana]: https://grafana.torproject.org/d/wUmZB05Zk/tpo-overview?orgId=1&viewPanel=30&from=now-1y&to=now

[According to Grafana]: https://grafana.torproject.org/d/zbCoGRjnz/disk-usage?orgId=1

[LVM volume groups]: https://grafana.torproject.org/d/f7887271-1a77-4138-ad16-28be8b0ad0ab/lvm-disk-usage?orgId=1



Other large consumers include:



 * GitLab: TODO

 * mirrors:

 * metrics

 * etc



# Proposal