diff --git a/homeassistant/components/synology_dsm/__init__.py b/homeassistant/components/synology_dsm/__init__.py
index 1b26b7df84d..70c7e76a53a 100644
--- a/homeassistant/components/synology_dsm/__init__.py
+++ b/homeassistant/components/synology_dsm/__init__.py
@@ -9,7 +9,6 @@ from synology_dsm.api.surveillance_station import SynoSurveillanceStation
 from synology_dsm.api.surveillance_station.camera import SynoCamera
 from synology_dsm.exceptions import SynologyDSMNotLoggedInException
 
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_MAC, CONF_SCAN_INTERVAL, CONF_VERIFY_SSL
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -31,15 +30,16 @@ from .const import (
 from .coordinator import (
     SynologyDSMCameraUpdateCoordinator,
     SynologyDSMCentralUpdateCoordinator,
+    SynologyDSMConfigEntry,
+    SynologyDSMData,
     SynologyDSMSwitchUpdateCoordinator,
 )
-from .models import SynologyDSMData
 from .service import async_setup_services
 
 _LOGGER = logging.getLogger(__name__)
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_setup_entry(hass: HomeAssistant, entry: SynologyDSMConfigEntry) -> bool:
     """Set up Synology DSM sensors."""
 
     # Migrate device identifiers
@@ -120,13 +120,12 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         except SYNOLOGY_CONNECTION_EXCEPTIONS as ex:
             raise ConfigEntryNotReady from ex
 
-    synology_data = SynologyDSMData(
+    entry.runtime_data = SynologyDSMData(
         api=api,
         coordinator_central=coordinator_central,
         coordinator_cameras=coordinator_cameras,
         coordinator_switches=coordinator_switches,
     )
-    hass.data.setdefault(DOMAIN, {})[entry.unique_id] = synology_data
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
     entry.async_on_unload(entry.add_update_listener(_async_update_listener))
 
@@ -143,25 +142,28 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_unload_entry(
+    hass: HomeAssistant, entry: SynologyDSMConfigEntry
+) -> bool:
     """Unload Synology DSM sensors."""
     if unload_ok := await hass.config_entries.async_unload_platforms(entry, PLATFORMS):
-        entry_data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+        entry_data = entry.runtime_data
         await entry_data.api.async_unload()
-        hass.data[DOMAIN].pop(entry.unique_id)
     return unload_ok
 
 
-async def _async_update_listener(hass: HomeAssistant, entry: ConfigEntry) -> None:
+async def _async_update_listener(
+    hass: HomeAssistant, entry: SynologyDSMConfigEntry
+) -> None:
     """Handle options update."""
     await hass.config_entries.async_reload(entry.entry_id)
 
 
 async def async_remove_config_entry_device(
-    hass: HomeAssistant, entry: ConfigEntry, device_entry: dr.DeviceEntry
+    hass: HomeAssistant, entry: SynologyDSMConfigEntry, device_entry: dr.DeviceEntry
 ) -> bool:
     """Remove synology_dsm config entry from a device."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     api = data.api
     assert api.information is not None
     serial = api.information.serial
diff --git a/homeassistant/components/synology_dsm/backup.py b/homeassistant/components/synology_dsm/backup.py
index c4b44542059..11f4287dea2 100644
--- a/homeassistant/components/synology_dsm/backup.py
+++ b/homeassistant/components/synology_dsm/backup.py
@@ -17,7 +17,6 @@ from homeassistant.components.backup import (
     BackupNotFound,
     suggested_filename,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.aiohttp_client import ChunkAsyncStreamIterator
 from homeassistant.helpers.json import json_dumps
@@ -29,7 +28,7 @@ from .const import (
     DATA_BACKUP_AGENT_LISTENERS,
     DOMAIN,
 )
-from .models import SynologyDSMData
+from .coordinator import SynologyDSMConfigEntry
 
 LOGGER = logging.getLogger(__name__)
 
@@ -47,18 +46,17 @@ async def async_get_backup_agents(
     hass: HomeAssistant,
 ) -> list[BackupAgent]:
     """Return a list of backup agents."""
-    if not (
-        entries := hass.config_entries.async_loaded_entries(DOMAIN)
-    ) or not hass.data.get(DOMAIN):
+    entries: list[SynologyDSMConfigEntry] = hass.config_entries.async_loaded_entries(
+        DOMAIN
+    )
+    if not entries:
         LOGGER.debug("No proper config entry found")
         return []
-    syno_datas: dict[str, SynologyDSMData] = hass.data[DOMAIN]
     return [
         SynologyDSMBackupAgent(hass, entry, entry.unique_id)
         for entry in entries
         if entry.unique_id is not None
-        and (syno_data := syno_datas.get(entry.unique_id))
-        and syno_data.api.file_station
+        and entry.runtime_data.api.file_station
         and entry.options.get(CONF_BACKUP_PATH)
     ]
 
@@ -91,7 +89,9 @@ class SynologyDSMBackupAgent(BackupAgent):
 
     domain = DOMAIN
 
-    def __init__(self, hass: HomeAssistant, entry: ConfigEntry, unique_id: str) -> None:
+    def __init__(
+        self, hass: HomeAssistant, entry: SynologyDSMConfigEntry, unique_id: str
+    ) -> None:
         """Initialize the Synology DSM backup agent."""
         super().__init__()
         LOGGER.debug("Initializing Synology DSM backup agent for %s", entry.unique_id)
@@ -100,7 +100,7 @@ class SynologyDSMBackupAgent(BackupAgent):
         self.path = (
             f"{entry.options[CONF_BACKUP_SHARE]}/{entry.options[CONF_BACKUP_PATH]}"
         )
-        syno_data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+        syno_data = entry.runtime_data
         self.api = syno_data.api
         self.backup_base_names: dict[str, str] = {}
 
diff --git a/homeassistant/components/synology_dsm/binary_sensor.py b/homeassistant/components/synology_dsm/binary_sensor.py
index 2f7d041cb10..1ae5fa90760 100644
--- a/homeassistant/components/synology_dsm/binary_sensor.py
+++ b/homeassistant/components/synology_dsm/binary_sensor.py
@@ -12,20 +12,17 @@ from homeassistant.components.binary_sensor import (
     BinarySensorEntity,
     BinarySensorEntityDescription,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_DISKS, EntityCategory
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
 from . import SynoApi
-from .const import DOMAIN
-from .coordinator import SynologyDSMCentralUpdateCoordinator
+from .coordinator import SynologyDSMCentralUpdateCoordinator, SynologyDSMConfigEntry
 from .entity import (
     SynologyDSMBaseEntity,
     SynologyDSMDeviceEntity,
     SynologyDSMEntityDescription,
 )
-from .models import SynologyDSMData
 
 
 @dataclass(frozen=True, kw_only=True)
@@ -64,11 +61,11 @@ STORAGE_DISK_BINARY_SENSORS: tuple[SynologyDSMBinarySensorEntityDescription, ...
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: SynologyDSMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set up the Synology NAS binary sensor."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     api = data.api
     coordinator = data.coordinator_central
     assert api.storage is not None
diff --git a/homeassistant/components/synology_dsm/button.py b/homeassistant/components/synology_dsm/button.py
index 6512c370334..79297b1f1b4 100644
--- a/homeassistant/components/synology_dsm/button.py
+++ b/homeassistant/components/synology_dsm/button.py
@@ -12,7 +12,6 @@ from homeassistant.components.button import (
     ButtonEntity,
     ButtonEntityDescription,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import EntityCategory
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceInfo
@@ -20,7 +19,7 @@ from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
 from . import SynoApi
 from .const import DOMAIN
-from .models import SynologyDSMData
+from .coordinator import SynologyDSMConfigEntry
 
 LOGGER = logging.getLogger(__name__)
 
@@ -52,11 +51,11 @@ BUTTONS: Final = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: SynologyDSMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set buttons for device."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     async_add_entities(SynologyDSMButton(data.api, button) for button in BUTTONS)
 
 
diff --git a/homeassistant/components/synology_dsm/camera.py b/homeassistant/components/synology_dsm/camera.py
index acbcccb8894..f393b8efb55 100644
--- a/homeassistant/components/synology_dsm/camera.py
+++ b/homeassistant/components/synology_dsm/camera.py
@@ -16,7 +16,6 @@ from homeassistant.components.camera import (
     CameraEntityDescription,
     CameraEntityFeature,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
@@ -29,9 +28,8 @@ from .const import (
     DOMAIN,
     SIGNAL_CAMERA_SOURCE_CHANGED,
 )
-from .coordinator import SynologyDSMCameraUpdateCoordinator
+from .coordinator import SynologyDSMCameraUpdateCoordinator, SynologyDSMConfigEntry
 from .entity import SynologyDSMBaseEntity, SynologyDSMEntityDescription
-from .models import SynologyDSMData
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -47,11 +45,11 @@ class SynologyDSMCameraEntityDescription(
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: SynologyDSMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set up the Synology NAS cameras."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     if coordinator := data.coordinator_cameras:
         async_add_entities(
             SynoDSMCamera(data.api, coordinator, camera_id)
diff --git a/homeassistant/components/synology_dsm/config_flow.py b/homeassistant/components/synology_dsm/config_flow.py
index 58784862305..f0da6f8fe47 100644
--- a/homeassistant/components/synology_dsm/config_flow.py
+++ b/homeassistant/components/synology_dsm/config_flow.py
@@ -72,7 +72,7 @@ from .const import (
     DOMAIN,
     SYNOLOGY_CONNECTION_EXCEPTIONS,
 )
-from .models import SynologyDSMData
+from .coordinator import SynologyDSMConfigEntry
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -131,7 +131,7 @@ class SynologyDSMFlowHandler(ConfigFlow, domain=DOMAIN):
     @staticmethod
     @callback
     def async_get_options_flow(
-        config_entry: ConfigEntry,
+        config_entry: SynologyDSMConfigEntry,
     ) -> SynologyDSMOptionsFlowHandler:
         """Get the options flow for this handler."""
         return SynologyDSMOptionsFlowHandler()
@@ -444,6 +444,8 @@ class SynologyDSMFlowHandler(ConfigFlow, domain=DOMAIN):
 class SynologyDSMOptionsFlowHandler(OptionsFlow):
     """Handle a option flow."""
 
+    config_entry: SynologyDSMConfigEntry
+
     async def async_step_init(
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
@@ -451,7 +453,7 @@ class SynologyDSMOptionsFlowHandler(OptionsFlow):
         if user_input is not None:
             return self.async_create_entry(title="", data=user_input)
 
-        syno_data: SynologyDSMData = self.hass.data[DOMAIN][self.config_entry.unique_id]
+        syno_data = self.config_entry.runtime_data
 
         data_schema = vol.Schema(
             {
diff --git a/homeassistant/components/synology_dsm/coordinator.py b/homeassistant/components/synology_dsm/coordinator.py
index 1b3e21090b8..a35432f0774 100644
--- a/homeassistant/components/synology_dsm/coordinator.py
+++ b/homeassistant/components/synology_dsm/coordinator.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 from collections.abc import Awaitable, Callable, Coroutine
+from dataclasses import dataclass
 from datetime import timedelta
 import logging
 from typing import Any, Concatenate
@@ -28,6 +29,19 @@ from .const import (
 _LOGGER = logging.getLogger(__name__)
 
 
+@dataclass
+class SynologyDSMData:
+    """Data for the synology_dsm integration."""
+
+    api: SynoApi
+    coordinator_central: SynologyDSMCentralUpdateCoordinator
+    coordinator_cameras: SynologyDSMCameraUpdateCoordinator | None
+    coordinator_switches: SynologyDSMSwitchUpdateCoordinator | None
+
+
+type SynologyDSMConfigEntry = ConfigEntry[SynologyDSMData]
+
+
 def async_re_login_on_expired[_T: SynologyDSMUpdateCoordinator[Any], **_P, _R](
     func: Callable[Concatenate[_T, _P], Awaitable[_R]],
 ) -> Callable[Concatenate[_T, _P], Coroutine[Any, Any, _R]]:
@@ -57,12 +71,12 @@ def async_re_login_on_expired[_T: SynologyDSMUpdateCoordinator[Any], **_P, _R](
 class SynologyDSMUpdateCoordinator[_DataT](DataUpdateCoordinator[_DataT]):
     """DataUpdateCoordinator base class for synology_dsm."""
 
-    config_entry: ConfigEntry
+    config_entry: SynologyDSMConfigEntry
 
     def __init__(
         self,
         hass: HomeAssistant,
-        entry: ConfigEntry,
+        entry: SynologyDSMConfigEntry,
         api: SynoApi,
         update_interval: timedelta,
     ) -> None:
@@ -85,7 +99,7 @@ class SynologyDSMSwitchUpdateCoordinator(
     def __init__(
         self,
         hass: HomeAssistant,
-        entry: ConfigEntry,
+        entry: SynologyDSMConfigEntry,
         api: SynoApi,
     ) -> None:
         """Initialize DataUpdateCoordinator for switch devices."""
@@ -116,7 +130,7 @@ class SynologyDSMCentralUpdateCoordinator(SynologyDSMUpdateCoordinator[None]):
     def __init__(
         self,
         hass: HomeAssistant,
-        entry: ConfigEntry,
+        entry: SynologyDSMConfigEntry,
         api: SynoApi,
     ) -> None:
         """Initialize DataUpdateCoordinator for central device."""
@@ -136,7 +150,7 @@ class SynologyDSMCameraUpdateCoordinator(
     def __init__(
         self,
         hass: HomeAssistant,
-        entry: ConfigEntry,
+        entry: SynologyDSMConfigEntry,
         api: SynoApi,
     ) -> None:
         """Initialize DataUpdateCoordinator for cameras."""
diff --git a/homeassistant/components/synology_dsm/diagnostics.py b/homeassistant/components/synology_dsm/diagnostics.py
index b30955ae682..a673be23096 100644
--- a/homeassistant/components/synology_dsm/diagnostics.py
+++ b/homeassistant/components/synology_dsm/diagnostics.py
@@ -6,21 +6,20 @@ from typing import Any
 
 from homeassistant.components.camera import diagnostics as camera_diagnostics
 from homeassistant.components.diagnostics import async_redact_data
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
 from homeassistant.core import HomeAssistant
 
-from .const import CONF_DEVICE_TOKEN, DOMAIN
-from .models import SynologyDSMData
+from .const import CONF_DEVICE_TOKEN
+from .coordinator import SynologyDSMConfigEntry
 
 TO_REDACT = {CONF_USERNAME, CONF_PASSWORD, CONF_DEVICE_TOKEN}
 
 
 async def async_get_config_entry_diagnostics(
-    hass: HomeAssistant, entry: ConfigEntry
+    hass: HomeAssistant, entry: SynologyDSMConfigEntry
 ) -> dict[str, Any]:
     """Return diagnostics for a config entry."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     syno_api = data.api
     dsm_info = syno_api.dsm.information
 
diff --git a/homeassistant/components/synology_dsm/media_source.py b/homeassistant/components/synology_dsm/media_source.py
index d35b262809c..6234f5e8dd0 100644
--- a/homeassistant/components/synology_dsm/media_source.py
+++ b/homeassistant/components/synology_dsm/media_source.py
@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+from logging import getLogger
 import mimetypes
 
 from aiohttp import web
@@ -22,7 +23,9 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 
 from .const import DOMAIN, SHARED_SUFFIX
-from .models import SynologyDSMData
+from .coordinator import SynologyDSMConfigEntry, SynologyDSMData
+
+LOGGER = getLogger(__name__)
 
 
 async def async_get_media_source(hass: HomeAssistant) -> MediaSource:
@@ -41,15 +44,13 @@ class SynologyPhotosMediaSourceIdentifier:
         """Split identifier into parts."""
         parts = identifier.split("/")
 
-        self.unique_id = None
+        self.unique_id = parts[0]
         self.album_id = None
         self.cache_key = None
         self.file_name = None
         self.is_shared = False
         self.passphrase = ""
 
-        self.unique_id = parts[0]
-
         if len(parts) > 1:
             album_parts = parts[1].split("_")
             self.album_id = album_parts[0]
@@ -82,7 +83,7 @@ class SynologyPhotosMediaSource(MediaSource):
         item: MediaSourceItem,
     ) -> BrowseMediaSource:
         """Return media."""
-        if not self.hass.data.get(DOMAIN):
+        if not self.hass.config_entries.async_loaded_entries(DOMAIN):
             raise BrowseError("Diskstation not initialized")
         return BrowseMediaSource(
             domain=DOMAIN,
@@ -116,7 +117,13 @@ class SynologyPhotosMediaSource(MediaSource):
                 for entry in self.entries
             ]
         identifier = SynologyPhotosMediaSourceIdentifier(item.identifier)
-        diskstation: SynologyDSMData = self.hass.data[DOMAIN][identifier.unique_id]
+        entry: SynologyDSMConfigEntry | None = (
+            self.hass.config_entries.async_entry_for_domain_unique_id(
+                DOMAIN, identifier.unique_id
+            )
+        )
+        assert entry
+        diskstation = entry.runtime_data
         assert diskstation.api.photos is not None
 
         if identifier.album_id is None:
@@ -244,7 +251,7 @@ class SynologyDsmMediaView(http.HomeAssistantView):
         self, request: web.Request, source_dir_id: str, location: str
     ) -> web.Response:
         """Start a GET request."""
-        if not self.hass.data.get(DOMAIN):
+        if not self.hass.config_entries.async_loaded_entries(DOMAIN):
             raise web.HTTPNotFound
         # location: {cache_key}/{filename}
         cache_key, file_name, passphrase = location.split("/")
@@ -257,7 +264,13 @@ class SynologyDsmMediaView(http.HomeAssistantView):
         if not isinstance(mime_type, str):
             raise web.HTTPNotFound
 
-        diskstation: SynologyDSMData = self.hass.data[DOMAIN][source_dir_id]
+        entry: SynologyDSMConfigEntry | None = (
+            self.hass.config_entries.async_entry_for_domain_unique_id(
+                DOMAIN, source_dir_id
+            )
+        )
+        assert entry
+        diskstation = entry.runtime_data
         assert diskstation.api.photos is not None
         item = SynoPhotosItem(image_id, "", "", "", cache_key, "xl", shared, passphrase)
         try:
diff --git a/homeassistant/components/synology_dsm/models.py b/homeassistant/components/synology_dsm/models.py
deleted file mode 100644
index 4f51d329ded..00000000000
--- a/homeassistant/components/synology_dsm/models.py
+++ /dev/null
@@ -1,22 +0,0 @@
-"""The synology_dsm integration models."""
-
-from __future__ import annotations
-
-from dataclasses import dataclass
-
-from .common import SynoApi
-from .coordinator import (
-    SynologyDSMCameraUpdateCoordinator,
-    SynologyDSMCentralUpdateCoordinator,
-    SynologyDSMSwitchUpdateCoordinator,
-)
-
-
-@dataclass
-class SynologyDSMData:
-    """Data for the synology_dsm integration."""
-
-    api: SynoApi
-    coordinator_central: SynologyDSMCentralUpdateCoordinator
-    coordinator_cameras: SynologyDSMCameraUpdateCoordinator | None
-    coordinator_switches: SynologyDSMSwitchUpdateCoordinator | None
diff --git a/homeassistant/components/synology_dsm/repairs.py b/homeassistant/components/synology_dsm/repairs.py
index 725e77a2593..8a4e47a32b5 100644
--- a/homeassistant/components/synology_dsm/repairs.py
+++ b/homeassistant/components/synology_dsm/repairs.py
@@ -11,7 +11,6 @@ import voluptuous as vol
 
 from homeassistant import data_entry_flow
 from homeassistant.components.repairs import ConfirmRepairFlow, RepairsFlow
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import issue_registry as ir
 from homeassistant.helpers.selector import (
@@ -28,7 +27,7 @@ from .const import (
     ISSUE_MISSING_BACKUP_SETUP,
     SYNOLOGY_CONNECTION_EXCEPTIONS,
 )
-from .models import SynologyDSMData
+from .coordinator import SynologyDSMConfigEntry
 
 LOGGER = logging.getLogger(__name__)
 
@@ -36,7 +35,7 @@ LOGGER = logging.getLogger(__name__)
 class MissingBackupSetupRepairFlow(RepairsFlow):
     """Handler for an issue fixing flow."""
 
-    def __init__(self, entry: ConfigEntry, issue_id: str) -> None:
+    def __init__(self, entry: SynologyDSMConfigEntry, issue_id: str) -> None:
         """Create flow."""
         self.entry = entry
         self.issue_id = issue_id
@@ -59,7 +58,7 @@ class MissingBackupSetupRepairFlow(RepairsFlow):
     ) -> data_entry_flow.FlowResult:
         """Handle the confirm step of a fix flow."""
 
-        syno_data: SynologyDSMData = self.hass.data[DOMAIN][self.entry.unique_id]
+        syno_data = self.entry.runtime_data
 
         if user_input is not None:
             self.hass.config_entries.async_update_entry(
diff --git a/homeassistant/components/synology_dsm/sensor.py b/homeassistant/components/synology_dsm/sensor.py
index 2987de7a7c7..566885e3989 100644
--- a/homeassistant/components/synology_dsm/sensor.py
+++ b/homeassistant/components/synology_dsm/sensor.py
@@ -16,7 +16,6 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
     SensorStateClass,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     CONF_DISKS,
     PERCENTAGE,
@@ -31,14 +30,13 @@ from homeassistant.helpers.typing import StateType
 from homeassistant.util.dt import utcnow
 
 from . import SynoApi
-from .const import CONF_VOLUMES, DOMAIN, ENTITY_UNIT_LOAD
-from .coordinator import SynologyDSMCentralUpdateCoordinator
+from .const import CONF_VOLUMES, ENTITY_UNIT_LOAD
+from .coordinator import SynologyDSMCentralUpdateCoordinator, SynologyDSMConfigEntry
 from .entity import (
     SynologyDSMBaseEntity,
     SynologyDSMDeviceEntity,
     SynologyDSMEntityDescription,
 )
-from .models import SynologyDSMData
 
 
 @dataclass(frozen=True, kw_only=True)
@@ -287,11 +285,11 @@ INFORMATION_SENSORS: tuple[SynologyDSMSensorEntityDescription, ...] = (
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: SynologyDSMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set up the Synology NAS Sensor."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     api = data.api
     coordinator = data.coordinator_central
     storage = api.storage
diff --git a/homeassistant/components/synology_dsm/service.py b/homeassistant/components/synology_dsm/service.py
index 366f7d4ba3a..40b6fd4bc30 100644
--- a/homeassistant/components/synology_dsm/service.py
+++ b/homeassistant/components/synology_dsm/service.py
@@ -3,13 +3,14 @@
 from __future__ import annotations
 
 import logging
+from typing import cast
 
 from synology_dsm.exceptions import SynologyDSMException
 
 from homeassistant.core import HomeAssistant, ServiceCall
 
 from .const import CONF_SERIAL, DOMAIN, SERVICE_REBOOT, SERVICE_SHUTDOWN, SERVICES
-from .models import SynologyDSMData
+from .coordinator import SynologyDSMConfigEntry
 
 LOGGER = logging.getLogger(__name__)
 
@@ -19,11 +20,20 @@ async def async_setup_services(hass: HomeAssistant) -> None:
 
     async def service_handler(call: ServiceCall) -> None:
         """Handle service call."""
-        serial = call.data.get(CONF_SERIAL)
-        dsm_devices = hass.data[DOMAIN]
+        serial: str | None = call.data.get(CONF_SERIAL)
+        entries: list[SynologyDSMConfigEntry] = (
+            hass.config_entries.async_loaded_entries(DOMAIN)
+        )
+        dsm_devices = {
+            cast(str, entry.unique_id): entry.runtime_data for entry in entries
+        }
 
         if serial:
-            dsm_device: SynologyDSMData = hass.data[DOMAIN][serial]
+            entry: SynologyDSMConfigEntry | None = (
+                hass.config_entries.async_entry_for_domain_unique_id(DOMAIN, serial)
+            )
+            assert entry
+            dsm_device = entry.runtime_data
         elif len(dsm_devices) == 1:
             dsm_device = next(iter(dsm_devices.values()))
             serial = next(iter(dsm_devices))
@@ -39,7 +49,7 @@ async def async_setup_services(hass: HomeAssistant) -> None:
             return
 
         if call.service in [SERVICE_REBOOT, SERVICE_SHUTDOWN]:
-            if serial not in hass.data[DOMAIN]:
+            if serial not in dsm_devices:
                 LOGGER.error("DSM with specified serial %s not found", serial)
                 return
             LOGGER.debug("%s DSM with serial %s", call.service, serial)
@@ -50,7 +60,7 @@ async def async_setup_services(hass: HomeAssistant) -> None:
                 ),
                 call.service,
             )
-            dsm_device = hass.data[DOMAIN][serial]
+            dsm_device = dsm_devices[serial]
             dsm_api = dsm_device.api
             try:
                 await getattr(dsm_api, f"async_{call.service}")()
diff --git a/homeassistant/components/synology_dsm/switch.py b/homeassistant/components/synology_dsm/switch.py
index c4f1572ceea..91863ff3a26 100644
--- a/homeassistant/components/synology_dsm/switch.py
+++ b/homeassistant/components/synology_dsm/switch.py
@@ -9,16 +9,14 @@ from typing import Any
 from synology_dsm.api.surveillance_station import SynoSurveillanceStation
 
 from homeassistant.components.switch import SwitchEntity, SwitchEntityDescription
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
 from . import SynoApi
 from .const import DOMAIN
-from .coordinator import SynologyDSMSwitchUpdateCoordinator
+from .coordinator import SynologyDSMConfigEntry, SynologyDSMSwitchUpdateCoordinator
 from .entity import SynologyDSMBaseEntity, SynologyDSMEntityDescription
-from .models import SynologyDSMData
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -41,11 +39,11 @@ SURVEILLANCE_SWITCH: tuple[SynologyDSMSwitchEntityDescription, ...] = (
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: SynologyDSMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set up the Synology NAS switch."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     if coordinator := data.coordinator_switches:
         assert coordinator.version is not None
         async_add_entities(
diff --git a/homeassistant/components/synology_dsm/update.py b/homeassistant/components/synology_dsm/update.py
index 71eed2d7f1f..3048a38cb9c 100644
--- a/homeassistant/components/synology_dsm/update.py
+++ b/homeassistant/components/synology_dsm/update.py
@@ -9,15 +9,12 @@ from synology_dsm.api.core.upgrade import SynoCoreUpgrade
 from yarl import URL
 
 from homeassistant.components.update import UpdateEntity, UpdateEntityDescription
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import EntityCategory
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
-from .const import DOMAIN
-from .coordinator import SynologyDSMCentralUpdateCoordinator
+from .coordinator import SynologyDSMCentralUpdateCoordinator, SynologyDSMConfigEntry
 from .entity import SynologyDSMBaseEntity, SynologyDSMEntityDescription
-from .models import SynologyDSMData
 
 
 @dataclass(frozen=True, kw_only=True)
@@ -39,11 +36,11 @@ UPDATE_ENTITIES: Final = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: SynologyDSMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set up Synology DSM update entities."""
-    data: SynologyDSMData = hass.data[DOMAIN][entry.unique_id]
+    data = entry.runtime_data
     async_add_entities(
         SynoDSMUpdateEntity(data.api, data.coordinator_central, description)
         for description in UPDATE_ENTITIES