First draft.

lsst-ts · Jul 24, 2024 · 253aa55 · 253aa55
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diff --git a/System-Architecture/Supporting-Infrastructure/index.rst b/System-Architecture/Supporting-Infrastructure/index.rst
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+.. _System-Architecture-Supporting-Infrastructure:
+
+#########################
+Supporting Infrastructure
+#########################
+
+Storage Retention Policies
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Summit
+------
+
+.. list-table:: Retention Policies
+   :widths: auto
+   :header-rows: 1
+
+   * - Content
+     - Retention (days)
+     - Provider
+     - Server
+   * - AuxTel Raw Images (Butler)
+     - 90
+     - Ceph NFS
+     - yagan
+   * - AuxTel Quicklook Images (Butler)
+     - ?? (90)
+     - Ceph NFS
+     - yagan
+   * - Large File Annex
+     - 30
+     - Ceph S3
+     - chonchon
+   * - RubinTV Products
+     - ??
+     - Ceph S3
+     - chonchon
+   * - ComCam Raw Images (Butler)
+     - 90
+     - NFS
+     - comcam-archiver
+   * - ComCam Quicklook Images (Butler)
+     - ?? (90)
+     - NFS
+     - comcam-archiver
+   * - LSSTCam Raw Images (Butler)
+     - ??
+     - Ceph NFS
+     - chonchon
+   * - LSSTCam Quicklook Images (Butler)
+     - ??
+     - Ceph NFS
+     - chonchon
+   * - LSSTCam Raw Images (Butler)
+     - 30
+     - Ceph S3
+     - elqui
+   * - LSSTCam Quicklook Images (Butler)
+     - ?? (30)
+     - Ceph S3
+     - elqui
+   * - DREAM Products
+     - ??
+     - Ceph S3
+     - elqui
+   * - EFD
+     - 30
+     - Ceph PVC
+     - yagan
+
+Notes:
+  * Quicklook images are generated by Rapid Analysis.
+  * Butler retentions are shared, but independent application is in progress.
+  * The elqui entries are for future reference. System is currently not ready for use.
+Open issues: 
+  * All retention policies should be reviewed for relevance.
+  * Anything with ?? needs a decision.
+  * Is DREAM going to store any products when elqui is available?
+  * Since calibration products are absolved from deletion, they will accumulate over time. How do we decide when and/or if to purge?
+  * Ceph NFS for LSS
diff --git a/System-Architecture/index.rst b/System-Architecture/index.rst
@@ -26,6 +26,7 @@ These are generally grouped according to their association with a specific teles
 
     Control-Packages/*
     CSC-Overview/*
+    Supporting-Infrastructure/*
 
 There exist multiple components for which documentation is not yet available including: the EFD, configuration management, deployment, and the scriptQueue.