Add missing object storage options & improve wording

doc/administration/high_availability/object_storage.md

@@ -4,22 +4,26 @@ type: reference
 
 # Cloud Object Storage
 
-GitLab supports utilizing a Cloud Object Storage service over [NFS](nfs.md) for holding
+GitLab supports utilizing a Cloud Object Storage service rather than [NFS](nfs.md) for holding
 numerous types of data. This is recommended in larger setups as object storage is
-typically much more performant and reliable.
+typically much more performant, reliable, and scalable.
 
 For configuring GitLab to use Object Storage refer to the following guides:
 
 1. Make sure the [`git` user home directory](https://docs.gitlab.com/omnibus/settings/configuration.html#moving-the-home-directory-for-a-user) is on local disk.
 1. Configure [database lookup of SSH keys](../operations/fast_ssh_key_lookup.md)
    to eliminate the need for a shared `authorized_keys` file.
+1. Configure [object storage for backups](../../raketasks/backup_restore.md#uploading-backups-to-a-remote-cloud-storage).
 1. Configure [object storage for job artifacts](../job_artifacts.md#using-object-storage)
    including [incremental logging](../job_logs.md#new-incremental-logging-architecture).
 1. Configure [object storage for LFS objects](../lfs/lfs_administration.md#storing-lfs-objects-in-remote-object-storage).
 1. Configure [object storage for uploads](../uploads.md#using-object-storage-core-only).
 1. Configure [object storage for merge request diffs](../merge_request_diffs.md#using-object-storage).
-1. Configure [object storage for packages](../packages/index.md#using-object-storage) (optional feature).
-1. Configure [object storage for dependency proxy](../packages/dependency_proxy.md#using-object-storage) (optional feature).
+1. Configure [object storage for container registry](../packages/container_registry.md#container-registry-storage-driver) (optional feature).
+1. Configure [object storage for Mattermost](https://docs.mattermost.com/administration/config-settings.html#file-storage) (optional feature).
+1. Configure [object storage for packages](../packages/index.md#using-object-storage) (optional feature). **(PREMIUM ONLY)**
+1. Configure [object storage for dependency proxy](../packages/dependency_proxy.md#using-object-storage) (optional feature). **(ULTIMATE ONLY)**
+1. Configure [object storage for Pseudonymizer](../pseudonymizer.md#configuration) (optional feature). **(ULTIMATE ONLY)**
 
 NOTE: **Note:**
 One current feature of GitLab that still requires a shared directory (NFS) is