diff --git a/homeassistant/components/synology_dsm/__init__.py b/homeassistant/components/synology_dsm/__init__.py
index 6dcac767e5c..7f6cef46cbc 100644
--- a/homeassistant/components/synology_dsm/__init__.py
+++ b/homeassistant/components/synology_dsm/__init__.py
@@ -234,6 +234,7 @@ class SynoApi:
         self._with_security = True
         self._with_storage = True
         self._with_utilisation = True
+        self._with_information = True
         self._with_surveillance_station = True
 
         self._unsub_dispatcher = None
@@ -304,11 +305,14 @@ class SynoApi:
         self._with_utilisation = bool(
             self._fetching_entities.get(SynoCoreUtilization.API_KEY)
         )
+        self._with_information = bool(
+            self._fetching_entities.get(SynoDSMInformation.API_KEY)
+        )
         self._with_surveillance_station = bool(
             self._fetching_entities.get(SynoSurveillanceStation.CAMERA_API_KEY)
         )
 
-        # Reset not used API
+        # Reset not used API, information is not reset since it's used in device_info
         if not self._with_security:
             self.dsm.reset(self.security)
             self.security = None
@@ -351,7 +355,7 @@ class SynoApi:
     async def async_update(self, now=None):
         """Update function for updating API information."""
         self._async_setup_api_requests()
-        await self._hass.async_add_executor_job(self.dsm.update)
+        await self._hass.async_add_executor_job(self.dsm.update, self._with_information)
         async_dispatcher_send(self._hass, self.signal_sensor_update)
 
 
diff --git a/homeassistant/components/synology_dsm/const.py b/homeassistant/components/synology_dsm/const.py
index f993e0ece73..0941bcb916b 100644
--- a/homeassistant/components/synology_dsm/const.py
+++ b/homeassistant/components/synology_dsm/const.py
@@ -2,6 +2,7 @@
 
 from synology_dsm.api.core.security import SynoCoreSecurity
 from synology_dsm.api.core.utilization import SynoCoreUtilization
+from synology_dsm.api.dsm.information import SynoDSMInformation
 from synology_dsm.api.storage.storage import SynoStorage
 
 from homeassistant.components.binary_sensor import DEVICE_CLASS_SAFETY
@@ -9,6 +10,8 @@ from homeassistant.const import (
     DATA_MEGABYTES,
     DATA_RATE_KILOBYTES_PER_SECOND,
     DATA_TERABYTES,
+    DEVICE_CLASS_TEMPERATURE,
+    DEVICE_CLASS_TIMESTAMP,
     PERCENTAGE,
 )
 
@@ -213,15 +216,15 @@ STORAGE_VOL_SENSORS = {
     f"{SynoStorage.API_KEY}:volume_disk_temp_avg": {
         ENTITY_NAME: "Average Disk Temp",
         ENTITY_UNIT: None,
-        ENTITY_ICON: "mdi:thermometer",
-        ENTITY_CLASS: "temperature",
+        ENTITY_ICON: None,
+        ENTITY_CLASS: DEVICE_CLASS_TEMPERATURE,
         ENTITY_ENABLE: True,
     },
     f"{SynoStorage.API_KEY}:volume_disk_temp_max": {
         ENTITY_NAME: "Maximum Disk Temp",
         ENTITY_UNIT: None,
-        ENTITY_ICON: "mdi:thermometer",
-        ENTITY_CLASS: "temperature",
+        ENTITY_ICON: None,
+        ENTITY_CLASS: DEVICE_CLASS_TEMPERATURE,
         ENTITY_ENABLE: False,
     },
 }
@@ -243,11 +246,33 @@ STORAGE_DISK_SENSORS = {
     f"{SynoStorage.API_KEY}:disk_temp": {
         ENTITY_NAME: "Temperature",
         ENTITY_UNIT: None,
-        ENTITY_ICON: "mdi:thermometer",
-        ENTITY_CLASS: "temperature",
+        ENTITY_ICON: None,
+        ENTITY_CLASS: DEVICE_CLASS_TEMPERATURE,
         ENTITY_ENABLE: True,
     },
 }
 
+INFORMATION_SENSORS = {
+    f"{SynoDSMInformation.API_KEY}:temperature": {
+        ENTITY_NAME: "temperature",
+        ENTITY_UNIT: None,
+        ENTITY_ICON: None,
+        ENTITY_CLASS: DEVICE_CLASS_TEMPERATURE,
+        ENTITY_ENABLE: True,
+    },
+    f"{SynoDSMInformation.API_KEY}:uptime": {
+        ENTITY_NAME: "last boot",
+        ENTITY_UNIT: None,
+        ENTITY_ICON: None,
+        ENTITY_CLASS: DEVICE_CLASS_TIMESTAMP,
+        ENTITY_ENABLE: False,
+    },
+}
 
-TEMP_SENSORS_KEYS = ["volume_disk_temp_avg", "volume_disk_temp_max", "disk_temp"]
+
+TEMP_SENSORS_KEYS = [
+    "volume_disk_temp_avg",
+    "volume_disk_temp_max",
+    "disk_temp",
+    "temperature",
+]
diff --git a/homeassistant/components/synology_dsm/sensor.py b/homeassistant/components/synology_dsm/sensor.py
index 22171fdf2f5..31013451682 100644
--- a/homeassistant/components/synology_dsm/sensor.py
+++ b/homeassistant/components/synology_dsm/sensor.py
@@ -1,4 +1,7 @@
 """Support for Synology DSM sensors."""
+from datetime import timedelta
+from typing import Dict
+
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     CONF_DISKS,
@@ -10,11 +13,13 @@ from homeassistant.const import (
 )
 from homeassistant.helpers.temperature import display_temp
 from homeassistant.helpers.typing import HomeAssistantType
+from homeassistant.util.dt import utcnow
 
-from . import SynologyDSMDeviceEntity, SynologyDSMEntity
+from . import SynoApi, SynologyDSMDeviceEntity, SynologyDSMEntity
 from .const import (
     CONF_VOLUMES,
     DOMAIN,
+    INFORMATION_SENSORS,
     STORAGE_DISK_SENSORS,
     STORAGE_VOL_SENSORS,
     SYNO_API,
@@ -55,6 +60,11 @@ async def async_setup_entry(
                 for sensor_type in STORAGE_DISK_SENSORS
             ]
 
+    entities += [
+        SynoDSMInfoSensor(api, sensor_type, INFORMATION_SENSORS[sensor_type])
+        for sensor_type in INFORMATION_SENSORS
+    ]
+
     async_add_entities(entities)
 
 
@@ -105,3 +115,34 @@ class SynoDSMStorageSensor(SynologyDSMDeviceEntity):
             return display_temp(self.hass, attr, TEMP_CELSIUS, PRECISION_TENTHS)
 
         return attr
+
+
+class SynoDSMInfoSensor(SynologyDSMEntity):
+    """Representation a Synology information sensor."""
+
+    def __init__(self, api: SynoApi, entity_type: str, entity_info: Dict[str, str]):
+        """Initialize the Synology SynoDSMInfoSensor entity."""
+        super().__init__(api, entity_type, entity_info)
+        self._previous_uptime = None
+        self._last_boot = None
+
+    @property
+    def state(self):
+        """Return the state."""
+        attr = getattr(self._api.information, self.entity_type)
+        if attr is None:
+            return None
+
+        # Temperature
+        if self.entity_type in TEMP_SENSORS_KEYS:
+            return display_temp(self.hass, attr, TEMP_CELSIUS, PRECISION_TENTHS)
+
+        if self.entity_type == "uptime":
+            # reboot happened or entity creation
+            if self._previous_uptime is None or self._previous_uptime > attr:
+                last_boot = utcnow() - timedelta(seconds=attr)
+                self._last_boot = last_boot.replace(microsecond=0).isoformat()
+
+            self._previous_uptime = attr
+            return self._last_boot
+        return attr