diff --git a/CHANGELOG.unreleased.md b/CHANGELOG.unreleased.md
index a3bef3ec4..e95ebf0fd 100644
--- a/CHANGELOG.unreleased.md
+++ b/CHANGELOG.unreleased.md
@@ -7,6 +7,8 @@
 
 > Users must be able to say: “Nice enhancement, I'm eager to test it”
 
+- [Snapshot] Confirmation message before creating a snapshot with memory [#4914](https://github.com/vatesfr/xen-orchestra/issues/4914) (PR [#4917](https://github.com/vatesfr/xen-orchestra/pull/4917))
+
 ### Bug fixes
 
 > Users must be able to say: “I had this issue, happy to know it's fixed”
diff --git a/packages/xo-web/src/common/intl/messages.js b/packages/xo-web/src/common/intl/messages.js
index 2878b3840..1682f5d41 100644
--- a/packages/xo-web/src/common/intl/messages.js
+++ b/packages/xo-web/src/common/intl/messages.js
@@ -1129,6 +1129,8 @@ const messages = {
   // ----- VM snapshot tab -----
   noSnapshots: 'No snapshots',
   newSnapshotWithMemory: 'New snapshot with memory',
+  newSnapshotWithMemoryConfirm:
+    'Are you sure you want to create a snapshot with memory? This could take a while and the VM will be unusable during that time.',
   snapshotMemorySaved: 'Memory saved',
   snapshotCreateButton: 'New snapshot',
   tipCreateSnapshotLabel: 'Just click on the snapshot button to create one!',
diff --git a/packages/xo-web/src/common/xo/index.js b/packages/xo-web/src/common/xo/index.js
index a0c6d8478..4afa3bdfa 100644
--- a/packages/xo-web/src/common/xo/index.js
+++ b/packages/xo-web/src/common/xo/index.js
@@ -1251,8 +1251,25 @@ export const deleteTemplates = templates =>
           }, noop)
   }, noop)
 
-export const snapshotVm = (vm, name, saveMemory, description) =>
-  _call('vm.snapshot', { id: resolveId(vm), name, description, saveMemory })
+export const snapshotVm = async (vm, name, saveMemory, description) => {
+  if (saveMemory) {
+    try {
+      await confirm({
+        title: _('newSnapshotWithMemory'),
+        body: _('newSnapshotWithMemoryConfirm'),
+        icon: 'memory',
+      })
+    } catch (error) {
+      return
+    }
+  }
+  return _call('vm.snapshot', {
+    id: resolveId(vm),
+    name,
+    description,
+    saveMemory,
+  })
+}
 
 import SnapshotVmModalBody from './snapshot-vm-modal' // eslint-disable-line import/first
 export const snapshotVms = vms =>
diff --git a/packages/xo-web/src/xo-app/vm/tab-snapshots.js b/packages/xo-web/src/xo-app/vm/tab-snapshots.js
index e4f79de4c..dd879f0cf 100644
--- a/packages/xo-web/src/xo-app/vm/tab-snapshots.js
+++ b/packages/xo-web/src/xo-app/vm/tab-snapshots.js
@@ -131,7 +131,7 @@ export default class TabSnapshot extends Component {
           <Col className='text-xs-right'>
             {vm.power_state !== 'Halted' && (
               <TabButton
-                btnStyle='primary'
+                btnStyle='warning'
                 handler={_snapshotVmWithMemory}
                 handlerParam={vm}
                 icon='memory'