diff --git a/data/grid5000/sites/lille/servers/granche-srv1.json b/data/grid5000/sites/lille/servers/granche-srv1.json
index 768a220bcc63f26d985998f16602499b54b3da6c..3961e0e5dc6178451254562e46f4999e0cd9fe82 100644
--- a/data/grid5000/sites/lille/servers/granche-srv1.json
+++ b/data/grid5000/sites/lille/servers/granche-srv1.json
@@ -2,6 +2,11 @@
   "alias": [
     "storage1"
   ],
+  "group_storage": {
+    "name": "storage1",
+    "rate": 50000000000,
+    "size": 90000000000000
+  },
   "kind": "physical",
   "monitoring": {
     "metric": "power",
diff --git a/data/grid5000/sites/lille/servers/granche-srv2.json b/data/grid5000/sites/lille/servers/granche-srv2.json
index cc31db11167adc127c27bfffe2835192fe706b82..3523ee383c0a8a47905ff61d37ecb012847777c4 100644
--- a/data/grid5000/sites/lille/servers/granche-srv2.json
+++ b/data/grid5000/sites/lille/servers/granche-srv2.json
@@ -3,6 +3,11 @@
     "storage2",
     "modules"
   ],
+  "group_storage": {
+    "name": "storage2",
+    "rate": 50000000000,
+    "size": 90000000000000
+  },
   "kind": "physical",
   "monitoring": {
     "metric": "power",
diff --git a/data/grid5000/sites/luxembourg/servers/srv-data.json b/data/grid5000/sites/luxembourg/servers/srv-data.json
index b444fe6480ad01793f280c33db27dde32425466f..8877b9842a4f83bf8094ee6346230724807f4f49 100644
--- a/data/grid5000/sites/luxembourg/servers/srv-data.json
+++ b/data/grid5000/sites/luxembourg/servers/srv-data.json
@@ -7,6 +7,11 @@
     "storage1",
     "modules"
   ],
+  "group_storage": {
+    "name": "storage1",
+    "rate": 20000000000,
+    "size": 40000000000000
+  },
   "kind": "physical",
   "network_adapters": {
     "bmc": {
diff --git a/data/grid5000/sites/lyon/servers/alcor.json b/data/grid5000/sites/lyon/servers/alcor.json
index 84243d23c7a91312f2d8036f9258c6e1e728f093..330165a58a34bdbdda2e169b6ff4608ad8d26ef4 100644
--- a/data/grid5000/sites/lyon/servers/alcor.json
+++ b/data/grid5000/sites/lyon/servers/alcor.json
@@ -2,6 +2,11 @@
   "alias": [
     "storage1"
   ],
+  "group_storage": {
+    "name": "storage1",
+    "rate": 10000000000,
+    "size": 75000000000000
+  },
   "kind": "physical",
   "network_adapters": {
     "bmc": {
diff --git a/data/grid5000/sites/nancy/servers/talc-data2.json b/data/grid5000/sites/nancy/servers/talc-data2.json
index 1a7e3bd073cd24593868e89059c43e4755cfa9d7..803939d91b50952bd25022031d1af7d54674d2ee 100644
--- a/data/grid5000/sites/nancy/servers/talc-data2.json
+++ b/data/grid5000/sites/nancy/servers/talc-data2.json
@@ -2,6 +2,11 @@
   "alias": [
 
   ],
+  "group_storage": {
+    "name": "talc-data2",
+    "rate": 10000000000,
+    "size": 200000000000000
+  },
   "kind": "physical",
   "network_adapters": {
     "bmc": {
diff --git a/data/grid5000/sites/rennes/servers/srv-bigdata.json b/data/grid5000/sites/rennes/servers/srv-bigdata.json
index 77e3c0b8b6e74113f7c02bff24f589db46d36220..b3d464a7a1397de3d65b9c5da01989f1ba06f040 100644
--- a/data/grid5000/sites/rennes/servers/srv-bigdata.json
+++ b/data/grid5000/sites/rennes/servers/srv-bigdata.json
@@ -4,6 +4,11 @@
     "storage1",
     "modules"
   ],
+  "group_storage": {
+    "name": "storage1",
+    "rate": 10000000000,
+    "size": 100000000000000
+  },
   "kind": "physical",
   "network_adapters": {
     "bmc": {
diff --git a/data/grid5000/sites/sophia/servers/srv-data.json b/data/grid5000/sites/sophia/servers/srv-data.json
index beb860de5c574f097e8f9249d3faef534549a645..8c7fe0a1ca409ca75596a5cac00fa066bf11b72b 100644
--- a/data/grid5000/sites/sophia/servers/srv-data.json
+++ b/data/grid5000/sites/sophia/servers/srv-data.json
@@ -5,6 +5,11 @@
     "storage1",
     "modules"
   ],
+  "group_storage": {
+    "name": "storage1",
+    "rate": 1000000000,
+    "size": 30000000000000
+  },
   "kind": "physical",
   "network_adapters": {
     "bmc": {
diff --git a/input/grid5000/sites/lille/servers/physical.yaml b/input/grid5000/sites/lille/servers/physical.yaml
index fb98d4d0ad18b81f2bd5895aa5b549fff46192c8..341549b3242e556bdb63869ae4e29204a4ed56f3 100644
--- a/input/grid5000/sites/lille/servers/physical.yaml
+++ b/input/grid5000/sites/lille/servers/physical.yaml
@@ -322,6 +322,10 @@ granche-srv1:
             port: 11
           - uid: pdu-b2p2
             port: 11
+  group_storage:
+    name: storage1
+    size: 90000000000000
+    rate: 50000000000
 
 granche-srv2:
   kind: physical
@@ -353,3 +357,7 @@ granche-srv2:
             port: 10
           - uid: pdu-b2p2
             port: 10
+  group_storage:
+    name: storage2
+    size: 90000000000000
+    rate: 50000000000
diff --git a/input/grid5000/sites/luxembourg/servers/servers.yaml b/input/grid5000/sites/luxembourg/servers/servers.yaml
index 4dea6d97426f26d23fa24ac18880c2741200830b..90389a479876799486a1b2cd9c7cb0de068ef87e 100644
--- a/input/grid5000/sites/luxembourg/servers/servers.yaml
+++ b/input/grid5000/sites/luxembourg/servers/servers.yaml
@@ -35,6 +35,10 @@ srv-data:
     bmc:
       ip: 172.17.190.70
       mac: D0:94:66:92:94:C1
+  group_storage:
+    name: storage1
+    size: 40000000000000
+    rate: 20000000000
 
 petitprince-cmc:
   kind: physical
diff --git a/input/grid5000/sites/lyon/servers/servers.yaml b/input/grid5000/sites/lyon/servers/servers.yaml
index 1487083ff63c7eed61ca965d47bddbd5f47b54df..e3c3d50baf3304ced5a3d4319509f5f4c0b983b9 100644
--- a/input/grid5000/sites/lyon/servers/servers.yaml
+++ b/input/grid5000/sites/lyon/servers/servers.yaml
@@ -51,6 +51,10 @@ alcor:
     bmc:
       ip: 172.17.62.11
       mac: 4C:D9:8F:6E:26:89
+  group_storage:
+    name: storage1
+    size: 75000000000000
+    rate: 10000000000
 
 nebula:
   kind: physical
diff --git a/input/grid5000/sites/nancy/servers/servers.yaml b/input/grid5000/sites/nancy/servers/servers.yaml
index a3cc45d04236c227111481e79545dfb39a94f6a0..8d1bda4ac6231fb9a4742447c0ad6106858c762f 100644
--- a/input/grid5000/sites/nancy/servers/servers.yaml
+++ b/input/grid5000/sites/nancy/servers/servers.yaml
@@ -279,6 +279,10 @@ talc-data2:
     bmc:
       ip: 172.17.79.30
       mac: 4c:d9:8f:63:31:d3
+  group_storage:
+    name: talc-data2
+    size: 200000000000000
+    rate: 10000000000
 
 srv3:
   kind: physical
diff --git a/input/grid5000/sites/rennes/servers/servers.yaml b/input/grid5000/sites/rennes/servers/servers.yaml
index eff1ccb8f6fc59ef5e21a768be03e3b76d3d2265..8bae81bc6497f936a12b167bf33736cd6b8d6fe5 100644
--- a/input/grid5000/sites/rennes/servers/servers.yaml
+++ b/input/grid5000/sites/rennes/servers/servers.yaml
@@ -69,6 +69,10 @@ srv-bigdata:
       ip: 172.16.111.7
     bmc:
       ip: 172.17.111.7
+  group_storage:
+    name: storage1
+    size: 100000000000000
+    rate: 10000000000
 
 rook-storage0:
   kind: physical
diff --git a/input/grid5000/sites/sophia/servers/physical.yaml b/input/grid5000/sites/sophia/servers/physical.yaml
index 705ee6bbf3f401a89195a5a7ab1979d81f11a57d..0131199199033dc08ebb7efa3e96ef042dc00287 100644
--- a/input/grid5000/sites/sophia/servers/physical.yaml
+++ b/input/grid5000/sites/sophia/servers/physical.yaml
@@ -105,6 +105,10 @@ srv-data:
       mounted: true
       ip: 172.17.143.5
       mac: 14:18:77:45:b8:63
+  group_storage:
+    name: storage1
+    size: 30000000000000
+    rate: 1000000000
 
 gwol-south:
   kind: physical
diff --git a/lib/refrepo/valid/input/schemas/schema-site.yaml b/lib/refrepo/valid/input/schemas/schema-site.yaml
index 3413ce21fa7d32b7c6e5d20fd4ded4e131698630..2cafc7c077fd6e216b33c6d639c774a0b257336a 100644
--- a/lib/refrepo/valid/input/schemas/schema-site.yaml
+++ b/lib/refrepo/valid/input/schemas/schema-site.yaml
@@ -31,6 +31,13 @@ servers:
               available: boolean
               resolution: optional_integer
               via: optional
+      group_storage:
+        <optional_hash>:
+          name: string
+          size: integer
+          rate: integer
+          comment: optional_string
+
 name: string
 location: string
 web: string