diff --git a/sysadmin/grid5000/cassandra/Vagrantfile b/sysadmin/grid5000/cassandra/Vagrantfile
index 5ff3003..ee1bf9e 100644
--- a/sysadmin/grid5000/cassandra/Vagrantfile
+++ b/sysadmin/grid5000/cassandra/Vagrantfile
@@ -1,60 +1,69 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
 vms = {
     "cassandra1" => {
         :ip          => "10.168.180.11",
         :memory      => 2048,
         :cpus        => 2,
+        :type       => 'cassandra',
     },
     "cassandra2" => {
         :ip          => "10.168.180.12",
         :memory      => 2048,
         :cpus        => 2,
+        :type       => 'cassandra',
     },
     "cassandra3" => {
         :ip          => "10.168.180.13",
         :memory      => 2048,
         :cpus        => 2,
+        :type       => 'cassandra',
     },
 }  
 
 # Images/remote configuration
 $global_debian10_box = "debian10-20210517-1348"
 $global_debian10_box_url = "https://annex.softwareheritage.org/public/isos/libvirt/debian/swh-debian-10.9-amd64-20210517-1348.qcow2"
 
 vms.each { | vm_name, vm_props |
 
     Vagrant.configure("2") do |global_config|
         unless Vagrant.has_plugin?("libvirt")
             $stderr.puts <<-MSG
             vagrant-libvirt plugin is required for this.
             To install: `$ sudo apt install vagrant-libvirt
         MSG
             exit 1
         end
         
         global_config.vm.define vm_name do |config|
             config.vm.box                     = $global_debian10_box
             config.vm.box_url                 = $global_debian10_box_url
             config.vm.box_check_update        = false
             config.vm.hostname                = vm_name
             config.vm.network   :private_network, ip: vm_props[:ip], netmask: "255.255.0.0"
 
-            config.vm.synced_folder ".", "/vagrant", type: 'nfs'
+            config.vm.synced_folder ".", "/vagrant", type: 'nfs', nfs_version: 4
 
             config.vm.provision :ansible do |ansible|
                 ansible.verbose = true
                 ansible.become = true
                 ansible.playbook = "ansible/playbook.yml"
                 ansible.inventory_path = "ansible/hosts.yml"
             end
 
             config.vm.provider :libvirt do |provider|
                 provider.memory = vm_props[:memory]
                 provider.cpus = vm_props[:cpus]
                 provider.driver = 'kvm'
+                if vm_props[:type] == "cassandra"
+                    provider.storage :file, :size => '1G'
+                    provider.storage :file, :size => '1G'
+                    provider.storage :file, :size => '1G'
+                end
+    
             end
         end
     end
 }
diff --git a/sysadmin/grid5000/cassandra/ansible/_zfs_create_dataset.yml b/sysadmin/grid5000/cassandra/ansible/_zfs_create_dataset.yml
new file mode 100644
index 0000000..8320e92
--- /dev/null
+++ b/sysadmin/grid5000/cassandra/ansible/_zfs_create_dataset.yml
@@ -0,0 +1,15 @@
+---
+
+- name: Prepare datasets
+  set_fact: 
+    datasets: "{{ datasets | default({}) | combine ({ [obj.key, item.key] | join('/') : item.value }) }}"
+  loop: "{{ lookup('dict', obj.value.datasets, wantlist=True) }}"
+
+- name: Create zfs dataset
+  shell: "zfs create -o mountpoint={{item.value}} {{item.key}}"
+  loop: "{{ lookup('dict', datasets, wantlist=True) }}"
+  when: item.key not in pool_list.stdout_lines
+
+- name: Clean local variable
+  set_fact: 
+    datasets: {}
diff --git a/sysadmin/grid5000/cassandra/ansible/cassandra.yml b/sysadmin/grid5000/cassandra/ansible/cassandra.yml
new file mode 100644
index 0000000..94930c6
--- /dev/null
+++ b/sysadmin/grid5000/cassandra/ansible/cassandra.yml
@@ -0,0 +1,57 @@
+---
+# - name: "Get public ipv4 address"
+#   set_fact:
+#     cassandra_seed_ips: "{{ansible_facts[item]['ipv4']['address']}}"
+#   with_items:
+#     - "{{cassandra_listen_interface }}"
+
+- name: Install cassandra signing key
+  apt_key:
+    url: https://downloads.apache.org/cassandra/KEYS
+    state: present
+
+- name: Install cassandra apt repository
+  apt_repository:
+    repo: deb http://downloads.apache.org/cassandra/debian 40x main
+    state: present
+    filename: cassandra.sources
+
+- name: Install cassandra packages
+  apt:
+    update_cache: true # force an apt update before
+    name:
+      ## TODO: check other version than jdk11
+      - openjdk-11-jdk
+      - cassandra
+      - dstat
+      - smartmontools
+
+- name: Create datadirs
+  file:
+    state: directory
+    path: "{{ item }}"
+    owner: "cassandra"
+    group: "cassandra"
+    mode: "0755"
+  with_items:
+    - "{{ cassandra_data_dir_base }}"
+    - "{{ cassandra_data_dir_system }}"
+    - "{{ cassandra_data_dir }}"
+    - "{{ cassandra_commitlogs_dir }}"
+
+- name: Configure cassandra
+  template:
+    src: "templates/{{item}}"
+    dest: "{{cassandra_config_dir}}/{{item}}"
+  with_items: [cassandra.yaml, jvm.options]
+  register: cassandra_configuration_files
+
+- name: Restart cassandra service
+  service:
+    name: cassandra
+    state: restarted
+  when: cassandra_configuration_files.changed
+
+
+
+  # TODO test different read ahead
diff --git a/sysadmin/grid5000/cassandra/ansible/hosts.yml b/sysadmin/grid5000/cassandra/ansible/hosts.yml
index 5c4de68..f5797af 100644
--- a/sysadmin/grid5000/cassandra/ansible/hosts.yml
+++ b/sysadmin/grid5000/cassandra/ansible/hosts.yml
@@ -1,36 +1,76 @@
+# Global configuration
 cassandra:
   hosts:
-    dahu[1:32].grenoble.grid5000.fr:
+    dahu-[1:32].grenoble.grid5000.fr:
+    parasilo-[2:4].rennes.grid5000.fr:
     # local vagrant hosts
     cassandra[1:9]:
   vars:
+    ansible_connection: local
     cassandra_config_dir: /etc/cassandra
     cassandra_data_dir_base: /srv/cassandra
     cassandra_data_dir_system: "{{cassandra_data_dir_base}}/system"
     cassandra_data_dir: "{{ cassandra_data_dir_base }}/data"
     cassandra_commitlogs_dir: "{{ cassandra_data_dir_base }}/commitlogs"
 
+
+# Per cluster specificities
+dahu_cluster_hosts:
+  hosts:
+    dahu[1:32].grenoble.grid5000.fr
+  vars:
+    cassandra_listen_interface: enp24s0f0
+
+parasilo_cluster_hosts:
+  hosts:
+    parasilo-[1:28].rennes.grid5000.fr:
+  vars:
+    cassandra_listen_interface: eno1
+    zfs_pools:
+      commitlogs:
+        disks:
+          - sdf
+        datasets:
+          commitlogs: /srv/cassandra/commitlogs
+      data:
+        disks:
+          - sdb
+          - sdc
+          - sdd
+          - sde
+        datasets:
+          data: /srv/cassandra/data
+
+
+# Vagrant configuration
 vagrant_nodes:
   hosts:
     cassandra1:
       ansible_host: 10.168.180.11
       ansible_user: vagrant
       ansible_ssh_private_key_file: .vagrant/machines/cassandra1/libvirt/private_key
     cassandra2:
       ansible_host: 10.168.180.12
       ansible_user: vagrant
       ansible_ssh_private_key_file: .vagrant/machines/cassandra2/libvirt/private_key
     cassandra3:
       ansible_host: 10.168.180.13
       ansible_user: vagrant
       ansible_ssh_private_key_file: .vagrant/machines/cassandra2/libvirt/private_key
   vars:
+    ansible_connection: ssh
     cassandra_listen_interface: eth1
     # passed through --extra-vars on grid5000
     cassandra_seed_ips: 10.168.180.11,10.168.180.12,10.168.180.13
-
-dahu_cluster_hosts:
-  hosts:
-    dahu[1:32].grenoble.grid5000.fr
-  vars:
-    cassandra_listen_interface: enp24s0f0
+    zfs_pools:
+      commitlogs:
+        disks:
+          - vdb
+        datasets:
+          commitlogs: /srv/cassandra/commitlogs
+      data:
+        disks:
+          - vdc
+          - vdd
+        datasets:
+          data: /srv/cassandra/data
diff --git a/sysadmin/grid5000/cassandra/ansible/playbook.yml b/sysadmin/grid5000/cassandra/ansible/playbook.yml
index b5a58a7..4bc7e98 100644
--- a/sysadmin/grid5000/cassandra/ansible/playbook.yml
+++ b/sysadmin/grid5000/cassandra/ansible/playbook.yml
@@ -1,60 +1,6 @@
 ---
 - name: Install cassandra
   hosts: cassandra
-
   tasks:
-    # - name: "Get public ipv4 address"
-    #   set_fact:
-    #     cassandra_seed_ips: "{{ansible_facts[item]['ipv4']['address']}}"
-    #   with_items:
-    #     - "{{cassandra_listen_interface }}"
-
-    - name: Install cassandra signing key
-      apt_key:
-        url: https://downloads.apache.org/cassandra/KEYS
-        state: present
-
-    - name: Install cassandra apt repository
-      apt_repository:
-        repo: deb http://downloads.apache.org/cassandra/debian 40x main
-        state: present
-        filename: cassandra.sources.list
-
-    - name: Install packages
-      apt:
-        update_cache: true # force an apt update before
-        name:
-          ## TODO: check other version than jdk11
-          - openjdk-11-jdk
-          - cassandra
-          - dstat
-
-    - name: Create datadirs
-      file:
-        state: directory
-        path: "{{ item }}"
-        owner: "cassandra"
-        group: "cassandra"
-        mode: "0755"
-      with_items:
-        - "{{ cassandra_data_dir_base }}"
-        - "{{ cassandra_data_dir_system }}"
-        - "{{ cassandra_data_dir }}"
-        - "{{ cassandra_commitlogs_dir }}"
-
-    - name: Configure cassandra
-      template:
-        src: "templates/{{item}}"
-        dest: "{{cassandra_config_dir}}/{{item}}"
-      with_items: [cassandra.yaml, jvm.options]
-      register: cassandra_configuration_files
-
-    - name: Restart cassandra service
-      service:
-        name: cassandra
-        state: restarted
-      when: cassandra_configuration_files.changed
-
-
-
-      # TODO test different read ahead
+    - include: zfs.yml
+    - include: cassandra.yml
diff --git a/sysadmin/grid5000/cassandra/ansible/templates/cassandra.yaml b/sysadmin/grid5000/cassandra/ansible/templates/cassandra.yaml
index 7511ccc..7a92e70 100644
--- a/sysadmin/grid5000/cassandra/ansible/templates/cassandra.yaml
+++ b/sysadmin/grid5000/cassandra/ansible/templates/cassandra.yaml
@@ -1,37 +1,37 @@
 cluster_name: swh-storage # default 'Test Cluster'
 num_tokens: 256 # default 256
 allocate_tokens_for_local_replication_factor: 3
 data_file_directories:
   - {{ cassandra_data_dir }} # TODO use several disks
-local_system_data_file_directory: {{ cassandra_data_dir_system }}
+# local_system_data_file_directory: {{ cassandra_data_dir_system }}
 commitlog_directory: {{ cassandra_commitlogs_dir }}
 
 disk_optimization_strategy: spinning # spinning | ssd
 
 # listen_address: 0.0.0.0 # always wrong according to the documentation
 listen_interface: {{ cassandra_listen_interface }} # always wrong according to the documentation
 
 concurrent_compactors: 1 # should be min(nb core, nb disks)
 
 internode_compression: dc # default dc possible all|dc|none
 
 concurrent_reads: 16 # 16 x number of drives
 concurrent_writes: 32 # 8 x number of cores
 
 commitlog_sync: periodic # default periodic
 commitlog_sync_period_in_ms: 10000 # default 10000
 
 partitioner: org.apache.cassandra.dht.Murmur3Partitioner
 endpoint_snitch: SimpleSnitch
 
 seed_provider:
 - class_name: org.apache.cassandra.locator.SimpleSeedProvider
   parameters:
       # seeds is actually a comma-delimited list of addresses.
       # Ex: "<ip1>,<ip2>,<ip3>"
       - seeds: "{{ cassandra_seed_ips }}"
 
 # TODO Test this options effects
 # disk_failure_policy: 
 # cdc_enabled
 #end
diff --git a/sysadmin/grid5000/cassandra/ansible/zfs.yml b/sysadmin/grid5000/cassandra/ansible/zfs.yml
new file mode 100644
index 0000000..5f481b4
--- /dev/null
+++ b/sysadmin/grid5000/cassandra/ansible/zfs.yml
@@ -0,0 +1,76 @@
+---
+- name: Install contrib and non-free repositories
+  apt_repository:
+    repo: deb http://deb.debian.org/debian/ buster-backports main contrib non-free
+    filename: backports.sources
+
+- name: Install zfs packages
+  apt:
+    update_cache: true # force an apt update before
+    name:
+    - linux-image-amd64
+    - linux-headers-amd64
+    - libnvpair1linux
+    - libuutil1linux
+    - libzfs2linux
+    - libzpool2linux
+    - zfs-dkms
+    - zfs-zed
+    - zfsutils-linux
+  ignore_errors: True
+
+- name: Ensure zfs initialized
+  shell: /usr/sbin/modprobe zfs
+
+- name: Finalize zfs packages installation
+  apt:
+    update_cache: true # force an apt update before
+    name:
+    - linux-image-amd64
+    - linux-headers-amd64
+    - libnvpair1linux
+    - libuutil1linux
+    - libzfs2linux
+    - libzpool2linux
+    - zfs-dkms
+    - zfs-zed
+    - zfsutils-linux
+
+- name: Install zfs packages after modprobe
+  apt:
+    update_cache: true # force an apt update before
+    name:
+    - zfsutils-linux
+    - zfs-zed
+
+- name: test if zfs pools are configured
+  command: zfs list -o name
+  register: pool_list
+
+- name: zfs pool import
+  shell: "zpool import {{ item.key }}"
+  loop:  "{{ lookup('dict', zfs_pools) }}"
+  when: item.key not in pool_list.stdout_lines
+  ignore_errors: True
+
+- name: test if zfs pools are configured
+  command: zfs list -o name
+  register: pool_list
+
+- name: create zfs pools
+  shell: "zpool create -f {{ item.key }} {{ item.value.disks | join(' ') }}"
+  loop:  "{{ lookup('dict', zfs_pools) }}"
+  when: item.key not in pool_list.stdout_lines
+
+- name: call dataset creation
+  include: _zfs_create_dataset.yml obj={{ outside_item }}
+  loop: "{{ lookup('dict', zfs_pools) }}"
+  loop_control:
+    loop_var: outside_item
+
+- name: call dataset creation
+  include: _zfs_create_dataset.yml obj={{ outside_item }}
+  loop: "{{ lookup('dict', zfs_pools) }}"
+  loop_control:
+    loop_var: outside_item
+  when: outside_item.key not in pool_list.stdout_lines