diff --git a/.ansible-lint b/.ansible-lint
index 0e01ba3..de44c0b 100644
--- a/.ansible-lint
+++ b/.ansible-lint
@@ -8,4 +8,5 @@ warn_list:
   - experimental  # all rules tagged as experimental
 
 exclude_paths:
-- group_vars/all/vault.yml
+  - group_vars/all/vault.yml
+  - utils/
diff --git a/backups.yml b/backups.yml
new file mode 100644
index 0000000..4886548
--- /dev/null
+++ b/backups.yml
@@ -0,0 +1,9 @@
+---
+- hosts: perceval.adm.auro.re
+  roles:
+    - borgbackup_server
+
+- hosts: all,!unifi,!unifi-*,!wiki.adm.auro.re
+  roles:
+    - borgbackup_client
+...
diff --git a/bdd.yml b/bdd.yml
index 7a0bf6c..f3fa7d3 100644
--- a/bdd.yml
+++ b/bdd.yml
@@ -1,7 +1,7 @@
 #!/usr/bin/env ansible-playbook
 ---
 # Install and configure bdd servers at Saclay and at OVH
-- hosts: bdd
+- hosts: bdd,!re2o-bdd.adm.auro.re,!services-bdd-local.adm.auro.re
   roles:
     - postgresql_server
 ...
diff --git a/group_vars/all/vars.yml b/group_vars/all/vars.yml
index 6244182..4da2625 100644
--- a/group_vars/all/vars.yml
+++ b/group_vars/all/vars.yml
@@ -98,6 +98,19 @@ ipv6_base_prefix: "2a09:6840"
 
 is_aurore_host: "{{ 'aurore_vm' in group_names }}"
 
+# Borgbackup
+borg_keep_daily: 7
+borg_keep_weekly: 4
+borg_keep_monthly: 12
+borg_backup_directories:
+  - "/etc/"
+  - "/var/"
+borg_backup_exclude:
+  - "/var/log/"
+borg_encryption_passphrase: "{{ vault_borg_encryption_passphrase }}"
+
+borg_server_host: 10.128.0.4
+
 rsyslog_outputs:
   - proto: relp
     address: 10.128.0.241
diff --git a/group_vars/all/vault.yml b/group_vars/all/vault.yml
index aba5f3e..481fb90 100644
--- a/group_vars/all/vault.yml
+++ b/group_vars/all/vault.yml
@@ -1,210 +1,214 @@
 $ANSIBLE_VAULT;1.1;AES256
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+36633432613931663263343861396632356136366636336163343333323661666663346365626564
+32613734313663656164333537653666313033643262336239623961313638306634343666303938
+62636236353161336134323430336263643038623663353965656236623465326661633766363765
+35653261663335313065383266383833393431333631653363363030363939323862653262316637
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+37646631643265333665643262666265653339616530336361333333633939373839323264613761
+62643363356431306330313761623933623333383066333364663439646536333232386232623238
+62356533636632396330353430653935613965383938643638353632643865323832623737646635
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+34316338343064393862353364613037393231343366633364393535343965623431
diff --git a/group_vars/bdd.yml b/group_vars/bdd.yml
new file mode 100644
index 0000000..f70b5eb
--- /dev/null
+++ b/group_vars/bdd.yml
@@ -0,0 +1,5 @@
+---
+borg_keep_hourly: 6
+borg_backup_exclude:
+  - "/var/lib/postgresql/"
+...
diff --git a/host_vars/caradoc.adm.auro.re.yml b/host_vars/caradoc.adm.auro.re.yml
new file mode 100644
index 0000000..2416ab3
--- /dev/null
+++ b/host_vars/caradoc.adm.auro.re.yml
@@ -0,0 +1,12 @@
+---
+borg_keep_hourly: 6
+borg_keep_daily: 7
+borg_keep_weekly: 4
+borg_keep_monthly: 12
+borg_backup_directories:
+  - "/etc"
+  - "/var"
+  - "/data_nextcloud"
+  - "/data_gitea"
+  - "/data_mail"
+...
diff --git a/host_vars/log.adm.auro.re.yml b/host_vars/log.adm.auro.re.yml
index 1c2ba97..2d7a21a 100644
--- a/host_vars/log.adm.auro.re.yml
+++ b/host_vars/log.adm.auro.re.yml
@@ -1,4 +1,9 @@
 ---
+borg_backup_directories:
+  - "/etc/"
+  - "/var/"
+borg_backup_exclude: []
+
 rsyslog_collector_base_dir: /var/log/remote
 rsyslog_inputs:
   - proto: relp
diff --git a/host_vars/perceval.adm.auro.re.yml b/host_vars/perceval.adm.auro.re.yml
new file mode 100644
index 0000000..a534d22
--- /dev/null
+++ b/host_vars/perceval.adm.auro.re.yml
@@ -0,0 +1,3 @@
+---
+borg_server_backups_dir: /borg
+...
diff --git a/host_vars/re2o-bdd.adm.auro.re.yml b/host_vars/re2o-bdd.adm.auro.re.yml
new file mode 100644
index 0000000..3b7266a
--- /dev/null
+++ b/host_vars/re2o-bdd.adm.auro.re.yml
@@ -0,0 +1 @@
+postgresql_databases: true
diff --git a/hosts b/hosts
index f075a8a..c5c9370 100644
--- a/hosts
+++ b/hosts
@@ -29,7 +29,6 @@ stream.adm.auro.re
 re2o-server.adm.auro.re
 re2o-ldap.adm.auro.re
 re2o-db.adm.auro.re
-#services-bdd-local.adm.auro.re
 backup.adm.auro.re
 mail.adm.auro.re
 wikijs.adm.auro.re
@@ -39,6 +38,9 @@ jitsi-aurore.adm.auro.re
 log.adm.auro.re
 bdd.adm.auro.re
 bdd-ovh.adm.auro.re
+litl.adm.auro.re
+services-bdd-local.adm.auro.re
+log.adm.auro.re
 
 [aurore_testing_vm]
 pendragon.adm.auro.re
@@ -514,3 +516,5 @@ proxy.adm.auro.re
 [bdd]
 bdd.adm.auro.re
 bdd-ovh.adm.auro.re
+services-bdd-local.adm.auro.re
+re2o-bdd.adm.auro.re
diff --git a/roles/borgbackup_client/defaults/main.yml b/roles/borgbackup_client/defaults/main.yml
new file mode 100644
index 0000000..0ffec29
--- /dev/null
+++ b/roles/borgbackup_client/defaults/main.yml
@@ -0,0 +1,8 @@
+---
+borg_keep_hourly: 0
+borg_keep_daily: 0
+borg_keep_weekly: 0
+borg_keep_monthly: 0
+borg_server_user: borgbackup
+borg_server_group: borgbackup
+...
diff --git a/roles/borgbackup_client/handlers/main.yml b/roles/borgbackup_client/handlers/main.yml
new file mode 100644
index 0000000..60f493a
--- /dev/null
+++ b/roles/borgbackup_client/handlers/main.yml
@@ -0,0 +1,5 @@
+---
+- name: Run systemd daemon-reload
+  systemd:
+    daemon_reload: true
+...
diff --git a/roles/borgbackup_client/tasks/main.yml b/roles/borgbackup_client/tasks/main.yml
new file mode 100644
index 0000000..f96b9a0
--- /dev/null
+++ b/roles/borgbackup_client/tasks/main.yml
@@ -0,0 +1,133 @@
+---
+- name: Pin borgmatic
+  template:
+    src: "{{ item.src }}"
+    dest: "{{ item.dest }}"
+    owner: root
+    group: root
+    mode: u=rw,g=r,o=
+  loop:
+    - src: apt/list.j2
+      dest: /etc/apt/sources.list.d/bullseye.list
+    - src: apt/preferences.j2
+      dest: /etc/apt/preferences.d/borgmatic-bullseye
+  when:
+    - ansible_distribution == "Debian"
+    - ansible_distribution_major_version | int <= 10
+
+- name: Don't pin borgmatic if we are on bullseye
+  file:
+    path: "/etc/apt/{{ item }}"
+    state: absent
+  loop:
+    - sources.list.d/bullseye.list
+    - preferences.d/borgmatic-bullseye
+  when:
+    - ansible_distribution == "Debian"
+    - ansible_distribution_release == "bullseye"
+
+- name: Install borgmatic
+  apt:
+    name: borgmatic
+    update_cache: true
+  register: apt_result
+  retries: 3
+  until: apt_result is succeeded
+
+- name: Create configuration directory for borgmatic
+  file:
+    path: /etc/borgmatic
+    state: directory
+    owner: root
+    group: root
+    mode: u=rwx,g=rx,o=
+
+- name: Add borgmatic configuration file
+  become: true
+  template:
+    src: config.yaml.j2
+    dest: /etc/borgmatic/config.yaml
+    owner: root
+    group: root
+    mode: u=rw,g=r,o=
+  vars:
+    borg_host_dir: "/borg/{{ inventory_hostname }}"
+
+- name: Create SSH key
+  openssh_keypair:
+    path: "/etc/borgmatic/id_remote"
+    type: ed25519
+    regenerate: full_idempotence
+    owner: root
+    group: root
+    mode: u=rw,g=,o=
+  register: ssh_key
+
+- name: Gather SSH host keys
+  delegate_to: "{{ borg_server_host }}"
+  command: "ssh-keyscan {{ borg_server_host }}"
+  register: keys
+
+- name: Add server key to known hosts
+  known_hosts:
+    hash_host: true
+    host: "{{ borg_server_host }}"
+    key: "{{ item }}"
+  loop: "{{ keys.stdout_lines }}"
+
+- name: Add public key to remote
+  delegate_to: "{{ borg_server_host }}"
+  become: true
+  authorized_key:
+    exclusive: false
+    user: "{{ borg_server_user }}"
+    key: "{{ ssh_key.public_key }}"
+    key_options: "{{ options | join(',') }}"
+  vars:
+    borg_host_dir: "/borg/{{ inventory_hostname }}"
+    options:
+      - 'command="borg serve --restrict-to-path {{ borg_host_dir }}"'
+      - no-agent-forwarding
+      - no-port-forwarding
+      - no-pty
+      - no-user-rc
+      - no-X11-forwarding
+
+- name: Init repository
+  command: borgmatic init --encryption repokey
+
+- name: Install timer and service for borgmatic
+  template:
+    src: "{{ item }}.j2"
+    dest: "/etc/systemd/system/{{ item }}"
+    owner: root
+    group: root
+    mode: u=rw,g=r,o=
+  loop:
+    - borgmatic.timer
+    - borgmatic.service
+  notify:
+    - Run systemd daemon-reload
+
+- name: Run systemd deamon-reload
+  systemd:
+    daemon_reload: true
+
+- name: Start and enable borgmatic timer
+  systemd:
+    name: borgmatic.timer
+    state: started
+    enabled: true
+
+- name: Start and enable borgmatic service
+  systemd:
+    name: borgmatic.service
+    state: started
+    enabled: true
+
+- include_role:
+    name: update_motd
+  vars:
+    key: 10-borgmatic
+    message: Borgmatic (client) est installé dans /etc/borgmatic/config.yaml.
+...
diff --git a/roles/borgbackup_client/templates/apt/list.j2 b/roles/borgbackup_client/templates/apt/list.j2
new file mode 100644
index 0000000..ac5140d
--- /dev/null
+++ b/roles/borgbackup_client/templates/apt/list.j2
@@ -0,0 +1,3 @@
+{{ ansible_managed | comment }}
+
+deb https://deb.debian.org/debian/ bullseye main
diff --git a/roles/borgbackup_client/templates/apt/preferences.j2 b/roles/borgbackup_client/templates/apt/preferences.j2
new file mode 100644
index 0000000..c4d8784
--- /dev/null
+++ b/roles/borgbackup_client/templates/apt/preferences.j2
@@ -0,0 +1,9 @@
+{{ ansible_managed | comment }}
+
+Package: *
+Pin: release n=bullseye
+Pin-Priority: 1
+
+Package: borgmatic
+Pin: release n=bullseye
+Pin-Priority: 900
diff --git a/roles/borgbackup_client/templates/borgmatic.service.j2 b/roles/borgbackup_client/templates/borgmatic.service.j2
new file mode 100644
index 0000000..0dc140b
--- /dev/null
+++ b/roles/borgbackup_client/templates/borgmatic.service.j2
@@ -0,0 +1,29 @@
+{{ ansible_managed | comment }}
+
+[Unit]
+Description=Service for borgmatic backup
+Wants=network-online.target
+After=network-online.target
+ConditionACPower=true
+
+[Service]
+Type=simple
+ProtectSystem=full
+CapabilityBoundingSet=CAP_DAC_READ_SEARCH CAP_NET_RAW
+
+# Lower CPU and I/O priority.
+Nice=19
+CPUSchedulingPolicy=batch
+IOSchedulingClass=best-effort
+IOSchedulingPriority=7
+IOWeight=100
+
+Restart=no
+# Prevent rate limiting of borgmatic log events. If you are using an older version of systemd that
+# doesn't support this (pre-240 or so), you may have to remove this option.
+LogRateLimitIntervalSec=0
+
+# Delay start to prevent backups running during boot. Note that systemd-inhibit requires dbus and
+# dbus-user-session to be installed.
+# ExecStartPre=sleep 1m
+ExecStart=systemd-inhibit --who="borgmatic" --why="Prevent interrupting scheduled backup" /usr/bin/borgmatic -v 1
diff --git a/roles/borgbackup_client/templates/borgmatic.timer.j2 b/roles/borgbackup_client/templates/borgmatic.timer.j2
new file mode 100644
index 0000000..22f1bf9
--- /dev/null
+++ b/roles/borgbackup_client/templates/borgmatic.timer.j2
@@ -0,0 +1,10 @@
+{{ ansible_managed | comment }}
+
+[Unit]
+Description=Timer for borgmatic backup
+
+[Timer]
+OnCalendar=daily
+
+[Install]
+WantedBy=timers.target
diff --git a/roles/borgbackup_client/templates/config.yaml.j2 b/roles/borgbackup_client/templates/config.yaml.j2
new file mode 100644
index 0000000..a8eb2cb
--- /dev/null
+++ b/roles/borgbackup_client/templates/config.yaml.j2
@@ -0,0 +1,51 @@
+---
+{{ ansible_managed | comment }}
+
+location:
+  source_directories:
+{% for source in borg_backup_directories %}
+   - {{ source }}
+{% endfor %}
+  exclude_patterns:
+{% for exclude in borg_backup_exclude %}
+  - {{ exclude }}
+{% endfor %}
+  repositories:
+   - {{ borg_server_user }}@{{ borg_server_host }}:{{ borg_host_dir }}
+  borgmatic_source_directory: /var/backups
+
+storage:
+  encryption_passphrase: "{{ borg_encryption_passphrase }}"
+  ssh_command: ssh -i /etc/borgmatic/id_remote
+  # compression: 'lz4'
+  # umask: 0077
+  # lock_wait: 5
+  # archive_name_format: '{hostname}-{now}'
+
+
+retention:
+{% if borg_keep_hourly > 0 %}
+  keep_hourly: {{ borg_keep_hourly }}
+{% endif %}
+{% if borg_keep_daily > 0 %}
+  keep_daily: {{ borg_keep_daily }}
+{% endif %}
+{% if borg_keep_weekly > 0 %}
+  keep_weekly: {{ borg_keep_weekly }}
+{% endif %}
+{% if borg_keep_monthly > 0 %}
+  keep_monthly: {{ borg_keep_monthly }}
+{% endif %}
+
+consistency:
+  checks:
+    - repository
+    - archives
+
+{% if postgresql_databases is defined %}
+hooks:
+  postgresql_databases:
+    - name: all
+      username: postgres
+{% endif %}
+...
diff --git a/roles/borgbackup_server/defaults/main.yml b/roles/borgbackup_server/defaults/main.yml
new file mode 100644
index 0000000..bedb950
--- /dev/null
+++ b/roles/borgbackup_server/defaults/main.yml
@@ -0,0 +1,5 @@
+---
+borg_server_user: borgbackup
+borg_server_group: borgbackup
+borg_home_dir: /var/lib/borgbackup
+...
diff --git a/roles/borgbackup_server/tasks/main.yml b/roles/borgbackup_server/tasks/main.yml
new file mode 100644
index 0000000..9c77196
--- /dev/null
+++ b/roles/borgbackup_server/tasks/main.yml
@@ -0,0 +1,47 @@
+---
+- name: Install borg
+  apt:
+    name: borgbackup
+    state: present
+    update_cache: true
+  register: apt_result
+  retries: 3
+  until: apt_result is succeeded
+
+- name: Create a local group for borg
+  become: true
+  group:
+    name: "{{ borg_server_group }}"
+    system: true
+
+- name: Create a local user for borg
+  become: true
+  user:
+    home: "{{ borg_home_dir }}"
+    create_home: true
+    comment: Local user for borgbackup server
+    name: "{{ borg_server_user }}"
+    group: "{{ borg_server_group }}"
+    system: true
+    # Does not constitute a valid hash, preventing from login via password
+    password: "*"
+    update_password: always
+
+- name: Create backup directory
+  become: true
+  file:
+    path: "{{ borg_server_backups_dir }}"
+    state: directory
+    owner: "{{ borg_server_user }}"
+    group: "{{ borg_server_group }}"
+    mode: u=rwx,g=,o=
+
+- include_role:
+    name: update_motd
+  vars:
+    motd_messages:
+      - key: 10-borg-server
+        message: >-
+          Les sauvegardes (borg) sont stockées dans
+          {{ borg_server_backups_dir }}.
+...
diff --git a/roles/update_motd/handlers/main.yml b/roles/update_motd/handlers/main.yml
index 41dcc84..3736f9d 100644
--- a/roles/update_motd/handlers/main.yml
+++ b/roles/update_motd/handlers/main.yml
@@ -2,7 +2,7 @@
 - name: Remove cached motd
   become: true
   file:
-    path: "{{ item }}" 
+    path: "{{ item }}"
     state: absent
   loop:
     - /var/run/motd.dynamic
diff --git a/sudo_upgrade.yml b/utils/sudo_upgrade.yml
similarity index 100%
rename from sudo_upgrade.yml
rename to utils/sudo_upgrade.yml