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+# Recent analysis of storage requirements
+
+Now that we have some real world usage, we can make better estimates of our storage requirements.
+
+During the era in which we had 10 beds incoming, I am basing the estimates on the calendar day
+that used the *most* storage. Usage varies dramatically depending
+on whether the beds are in use, or if the patient is ventilated, etc, so it's good to assume the worst case.
+
+| Data type                  | Max daily usage, 10 beds enabled (kiB) | Est. 40 beds, 1 day (kiB) | Est. 40 beds, 183 days |
+|----------------------------| -------------------------------------- |---------------------------|------------------------|
+| HL7 BZ2                    | 399896 (21/9)                          | 1599584                   | **279 GiB**            |
+| CSV                        | 2314848 (19/9)                         | 9259392                   | **1616 GiB**           |
+| CSV (bzip2 --best)         | (253294)                               | (1013176)                 | **177 GiB**            |
+| orig parquet               | 462704 (19/9)                          | 1850816                   | **323 GiB**            |
+| pseud parquet              | 462760 (19/9)                          | 1851040                   | **323 GiB**            |
+| Total with current methods | 3640208 (3.47GiB)                      | 14560832 (13.9GiB)        | ***2544 GiB***         |
+| Total with compressed CSV  | 1578654 (1.51GiB)                      | 6314616 (6.02GiB)         | ***1102 GiB***         |
+
+
+The compressed CSV option would require the implementation of
+https://github.com/SAFEHR-data/waveform-controller/issues/15#issuecomment-5916464129
+
+This doesn't include any headroom for (eg) reprocessing existing HL7 data before deleting the old outputs,
+or other usage of GAE01.