diff --git a/resources/sql/autopatches/20210316.almanac.03.device-status.sql b/resources/sql/autopatches/20210316.almanac.03.device-status.sql
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20210316.almanac.03.device-status.sql
@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_almanac.almanac_device
+  ADD status VARCHAR(32) NOT NULL COLLATE {$COLLATE_TEXT};
diff --git a/resources/sql/autopatches/20210316.almanac.04.device-status-value.sql b/resources/sql/autopatches/20210316.almanac.04.device-status-value.sql
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20210316.almanac.04.device-status-value.sql
@@ -0,0 +1,2 @@
+UPDATE {$NAMESPACE}_almanac.almanac_device
+  SET status = 'active' WHERE status = '';
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -62,6 +62,8 @@
     'AlmanacDeviceSearchConduitAPIMethod' => 'applications/almanac/conduit/AlmanacDeviceSearchConduitAPIMethod.php',
     'AlmanacDeviceSearchEngine' => 'applications/almanac/query/AlmanacDeviceSearchEngine.php',
     'AlmanacDeviceSetPropertyTransaction' => 'applications/almanac/xaction/AlmanacDeviceSetPropertyTransaction.php',
+    'AlmanacDeviceStatus' => 'applications/almanac/constants/AlmanacDeviceStatus.php',
+    'AlmanacDeviceStatusTransaction' => 'applications/almanac/xaction/AlmanacDeviceStatusTransaction.php',
     'AlmanacDeviceTransaction' => 'applications/almanac/storage/AlmanacDeviceTransaction.php',
     'AlmanacDeviceTransactionQuery' => 'applications/almanac/query/AlmanacDeviceTransactionQuery.php',
     'AlmanacDeviceTransactionType' => 'applications/almanac/xaction/AlmanacDeviceTransactionType.php',
@@ -6089,6 +6091,8 @@
     'AlmanacDeviceSearchConduitAPIMethod' => 'PhabricatorSearchEngineAPIMethod',
     'AlmanacDeviceSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'AlmanacDeviceSetPropertyTransaction' => 'AlmanacDeviceTransactionType',
+    'AlmanacDeviceStatus' => 'Phobject',
+    'AlmanacDeviceStatusTransaction' => 'AlmanacDeviceTransactionType',
     'AlmanacDeviceTransaction' => 'AlmanacModularTransaction',
     'AlmanacDeviceTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
     'AlmanacDeviceTransactionType' => 'AlmanacTransactionType',
diff --git a/src/applications/almanac/constants/AlmanacDeviceStatus.php b/src/applications/almanac/constants/AlmanacDeviceStatus.php
new file mode 100644
--- /dev/null
+++ b/src/applications/almanac/constants/AlmanacDeviceStatus.php
@@ -0,0 +1,89 @@
+<?php
+
+final class AlmanacDeviceStatus
+  extends Phobject {
+
+  const ACTIVE = 'active';
+  const DISABLED = 'disabled';
+
+  private $value;
+
+  public static function newStatusFromValue($value) {
+    $status = new self();
+    $status->value = $value;
+    return $status;
+  }
+
+  public function getValue() {
+    return $this->value;
+  }
+
+  public function getName() {
+    $name = $this->getDeviceStatusProperty('name');
+
+    if ($name === null) {
+      $name = pht('Unknown Almanac Device Status ("%s")', $this->getValue());
+    }
+
+    return $name;
+  }
+
+  public function getIconIcon() {
+    return $this->getDeviceStatusProperty('icon.icon');
+  }
+
+  public function getIconColor() {
+    return $this->getDeviceStatusProperty('icon.color');
+  }
+
+  public function isDisabled() {
+    return ($this->getValue() === self::DISABLED);
+  }
+
+  public function hasStatusTag() {
+    return ($this->getStatusTagIcon() !== null);
+  }
+
+  public function getStatusTagIcon() {
+    return $this->getDeviceStatusProperty('status-tag.icon');
+  }
+
+  public function getStatusTagColor() {
+    return $this->getDeviceStatusProperty('status-tag.color');
+  }
+
+  public static function getStatusMap() {
+    $result = array();
+
+    foreach (self::newDeviceStatusMap() as $status_value => $ignored) {
+      $result[$status_value] = self::newStatusFromValue($status_value);
+    }
+
+    return $result;
+  }
+
+  private function getDeviceStatusProperty($key, $default = null) {
+    $map = self::newDeviceStatusMap();
+    $properties = idx($map, $this->getValue(), array());
+    return idx($properties, $key, $default);
+  }
+
+  private static function newDeviceStatusMap() {
+    return array(
+      self::ACTIVE => array(
+        'name' => pht('Active'),
+        'icon.icon' => 'fa-server',
+        'icon.color' => 'green',
+      ),
+      self::DISABLED => array(
+        'name' => pht('Disabled'),
+        'icon.icon' => 'fa-times',
+        'icon.color' => 'grey',
+        'status-tag.icon' => 'fa-times',
+        'status-tag.color' => 'indigo',
+      ),
+    );
+  }
+
+
+}
diff --git a/src/applications/almanac/controller/AlmanacDeviceViewController.php b/src/applications/almanac/controller/AlmanacDeviceViewController.php
--- a/src/applications/almanac/controller/AlmanacDeviceViewController.php
+++ b/src/applications/almanac/controller/AlmanacDeviceViewController.php
@@ -31,6 +31,14 @@
       ->setPolicyObject($device)
       ->setHeaderIcon('fa-server');
 
+    $status = $device->getStatusObject();
+    if ($status->hasStatusTag()) {
+      $header->setStatus(
+        $status->getStatusTagIcon(),
+        $status->getStatusTagColor(),
+        $status->getName());
+    }
+
     $issue = null;
     if ($device->isClusterDevice()) {
       $issue = $this->addClusterMessage(
diff --git a/src/applications/almanac/editor/AlmanacDeviceEditEngine.php b/src/applications/almanac/editor/AlmanacDeviceEditEngine.php
--- a/src/applications/almanac/editor/AlmanacDeviceEditEngine.php
+++ b/src/applications/almanac/editor/AlmanacDeviceEditEngine.php
@@ -76,6 +76,8 @@
   }
 
   protected function buildCustomEditFields($object) {
+    $status_map = $this->getDeviceStatusMap($object);
+
     return array(
       id(new PhabricatorTextEditField())
         ->setKey('name')
@@ -84,7 +86,32 @@
         ->setTransactionType(AlmanacDeviceNameTransaction::TRANSACTIONTYPE)
         ->setIsRequired(true)
         ->setValue($object->getName()),
+      id(new PhabricatorSelectEditField())
+        ->setKey('status')
+        ->setLabel(pht('Status'))
+        ->setDescription(pht('Device status.'))
+        ->setTransactionType(AlmanacDeviceStatusTransaction::TRANSACTIONTYPE)
+        ->setOptions($status_map)
+        ->setValue($object->getStatus()),
     );
   }
 
+
+  private function getDeviceStatusMap(AlmanacDevice $device) {
+    $status_map = AlmanacDeviceStatus::getStatusMap();
+
+    // If the device currently has an unknown status, add it to the list for
+    // the dropdown.
+    $status_value = $device->getStatus();
+    if (!isset($status_map[$status_value])) {
+      $status_map = array(
+        $status_value => AlmanacDeviceStatus::newStatusFromValue($status_value),
+      ) + $status_map;
+    }
+
+    $status_map = mpull($status_map, 'getName');
+
+    return $status_map;
+  }
+
 }
diff --git a/src/applications/almanac/phid/AlmanacInterfacePHIDType.php b/src/applications/almanac/phid/AlmanacInterfacePHIDType.php
--- a/src/applications/almanac/phid/AlmanacInterfacePHIDType.php
+++ b/src/applications/almanac/phid/AlmanacInterfacePHIDType.php
@@ -34,7 +34,8 @@
 
       $id = $interface->getID();
 
-      $device_name = $interface->getDevice()->getName();
+      $device = $interface->getDevice();
+      $device_name = $device->getName();
       $address = $interface->getAddress();
       $port = $interface->getPort();
       $network = $interface->getNetwork()->getName();
@@ -48,6 +49,10 @@
 
       $handle->setObjectName(pht('Interface %d', $id));
       $handle->setName($name);
+
+      if ($device->isDisabled()) {
+        $handle->setStatus(PhabricatorObjectHandle::STATUS_CLOSED);
+      }
     }
   }
 
diff --git a/src/applications/almanac/query/AlmanacDeviceQuery.php b/src/applications/almanac/query/AlmanacDeviceQuery.php
--- a/src/applications/almanac/query/AlmanacDeviceQuery.php
+++ b/src/applications/almanac/query/AlmanacDeviceQuery.php
@@ -9,6 +9,7 @@
   private $namePrefix;
   private $nameSuffix;
   private $isClusterDevice;
+  private $statuses;
 
   public function withIDs(array $ids) {
     $this->ids = $ids;
@@ -35,6 +36,11 @@
     return $this;
   }
 
+  public function withStatuses(array $statuses) {
+    $this->statuses = $statuses;
+    return $this;
+  }
+
   public function withNameNgrams($ngrams) {
     return $this->withNgramsConstraint(
       new AlmanacDeviceNameNgrams(),
@@ -103,6 +109,13 @@
         (int)$this->isClusterDevice);
     }
 
+    if ($this->statuses !== null) {
+      $where[] = qsprintf(
+        $conn,
+        'device.status IN (%Ls)',
+        $this->statuses);
+    }
+
     return $where;
   }
 
diff --git a/src/applications/almanac/query/AlmanacDeviceSearchEngine.php b/src/applications/almanac/query/AlmanacDeviceSearchEngine.php
--- a/src/applications/almanac/query/AlmanacDeviceSearchEngine.php
+++ b/src/applications/almanac/query/AlmanacDeviceSearchEngine.php
@@ -16,6 +16,9 @@
   }
 
   protected function buildCustomSearchFields() {
+    $status_options = AlmanacDeviceStatus::getStatusMap();
+    $status_options = mpull($status_options, 'getName');
+
     return array(
       id(new PhabricatorSearchTextField())
         ->setLabel(pht('Name Contains'))
@@ -25,6 +28,11 @@
         ->setLabel(pht('Exact Names'))
         ->setKey('names')
         ->setDescription(pht('Search for devices with specific names.')),
+      id(new PhabricatorSearchCheckboxesField())
+        ->setLabel(pht('Statuses'))
+        ->setKey('statuses')
+        ->setDescription(pht('Search for devices with given statuses.'))
+        ->setOptions($status_options),
       id(new PhabricatorSearchThreeStateField())
         ->setLabel(pht('Cluster Device'))
         ->setKey('isClusterDevice')
@@ -50,6 +58,10 @@
       $query->withIsClusterDevice($map['isClusterDevice']);
     }
 
+    if ($map['statuses']) {
+      $query->withStatuses($map['statuses']);
+    }
+
     return $query;
   }
 
@@ -99,6 +111,19 @@
         $item->addIcon('fa-sitemap', pht('Cluster Device'));
       }
 
+      if ($device->isDisabled()) {
+        $item->setDisabled(true);
+      }
+
+      $status = $device->getStatusObject();
+      $icon_icon = $status->getIconIcon();
+      $icon_color = $status->getIconColor();
+      $icon_label = $status->getName();
+
+      $item->setStatusIcon(
+        "{$icon_icon} {$icon_color}",
+        $icon_label);
+
       $list->addItem($item);
     }
 
diff --git a/src/applications/almanac/storage/AlmanacDevice.php b/src/applications/almanac/storage/AlmanacDevice.php
--- a/src/applications/almanac/storage/AlmanacDevice.php
+++ b/src/applications/almanac/storage/AlmanacDevice.php
@@ -17,6 +17,7 @@
   protected $nameIndex;
   protected $viewPolicy;
   protected $editPolicy;
+  protected $status;
   protected $isBoundToClusterService;
 
   private $almanacProperties = self::ATTACHABLE;
@@ -25,6 +26,7 @@
     return id(new AlmanacDevice())
       ->setViewPolicy(PhabricatorPolicies::POLICY_USER)
       ->setEditPolicy(PhabricatorPolicies::POLICY_ADMIN)
+      ->setStatus(AlmanacDeviceStatus::ACTIVE)
       ->attachAlmanacProperties(array())
       ->setIsBoundToClusterService(0);
   }
@@ -35,6 +37,7 @@
       self::CONFIG_COLUMN_SCHEMA => array(
         'name' => 'text128',
         'nameIndex' => 'bytes12',
+        'status' => 'text32',
         'isBoundToClusterService' => 'bool',
       ),
       self::CONFIG_KEY_SCHEMA => array(
@@ -100,6 +103,18 @@
     return $this->getIsBoundToClusterService();
   }
 
+  public function getStatusObject() {
+    return $this->newStatusObject();
+  }
+
+  private function newStatusObject() {
+    return AlmanacDeviceStatus::newStatusFromValue($this->getStatus());
+  }
+
+  public function isDisabled() {
+    return $this->getStatusObject()->isDisabled();
+  }
+
 
 /* -(  AlmanacPropertyInterface  )------------------------------------------- */
 
@@ -263,12 +278,22 @@
         ->setKey('name')
         ->setType('string')
         ->setDescription(pht('The name of the device.')),
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('status')
+        ->setType('map<string, wild>')
+        ->setDescription(pht('Device status information.')),
     );
   }
 
   public function getFieldValuesForConduit() {
+    $status = $this->getStatusObject();
+
     return array(
       'name' => $this->getName(),
+      'status' => array(
+        'value' => $status->getValue(),
+        'name' => $status->getName(),
+      ),
     );
   }
 
diff --git a/src/applications/almanac/typeahead/AlmanacInterfaceDatasource.php b/src/applications/almanac/typeahead/AlmanacInterfaceDatasource.php
--- a/src/applications/almanac/typeahead/AlmanacInterfaceDatasource.php
+++ b/src/applications/almanac/typeahead/AlmanacInterfaceDatasource.php
@@ -46,9 +46,16 @@
 
     $results = array();
     foreach ($handles as $handle) {
+      if ($handle->isClosed()) {
+        $closed = pht('Disabled');
+      } else {
+        $closed = null;
+      }
+
       $results[] = id(new PhabricatorTypeaheadResult())
         ->setName($handle->getName())
-        ->setPHID($handle->getPHID());
+        ->setPHID($handle->getPHID())
+        ->setClosed($closed);
     }
 
     return $results;
diff --git a/src/applications/almanac/xaction/AlmanacDeviceStatusTransaction.php b/src/applications/almanac/xaction/AlmanacDeviceStatusTransaction.php
new file mode 100644
--- /dev/null
+++ b/src/applications/almanac/xaction/AlmanacDeviceStatusTransaction.php
@@ -0,0 +1,61 @@
+<?php
+
+final class AlmanacDeviceStatusTransaction
+  extends AlmanacDeviceTransactionType {
+
+  const TRANSACTIONTYPE = 'almanac:device:status';
+
+  public function generateOldValue($object) {
+    return $object->getStatus();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setStatus($value);
+  }
+
+  public function getTitle() {
+    $old_value = $this->getOldValue();
+    $new_value = $this->getNewValue();
+
+    $old_status = AlmanacDeviceStatus::newStatusFromValue($old_value);
+    $new_status = AlmanacDeviceStatus::newStatusFromValue($new_value);
+
+    $old_name = $old_status->getName();
+    $new_name = $new_status->getName();
+
+    return pht(
+      '%s changed the status of this device from %s to %s.',
+      $this->renderAuthor(),
+      $this->renderValue($old_name),
+      $this->renderValue($new_name));
+  }
+
+  public function validateTransactions($object, array $xactions) {
+    $errors = array();
+
+    $status_map = AlmanacDeviceStatus::getStatusMap();
+
+    $old_value = $this->generateOldValue($object);
+    foreach ($xactions as $xaction) {
+      $new_value = $xaction->getNewValue();
+
+      if ($new_value === $old_value) {
+        continue;
+      }
+
+      if (!isset($status_map[$new_value])) {
+        $errors[] = $this->newInvalidError(
+          pht(
+            'Almanac device status "%s" is unrecognized. Valid status '.
+            'values are: %s.',
+            $new_value,
+            implode(', ', array_keys($status_map))),
+          $xaction);
+        continue;
+      }
+    }
+
+    return $errors;
+  }
+
+}
diff --git a/src/applications/phid/PhabricatorObjectHandle.php b/src/applications/phid/PhabricatorObjectHandle.php
--- a/src/applications/phid/PhabricatorObjectHandle.php
+++ b/src/applications/phid/PhabricatorObjectHandle.php
@@ -197,6 +197,10 @@
     return $this->status;
   }
 
+  public function isClosed() {
+    return ($this->status === self::STATUS_CLOSED);
+  }
+
   public function setFullName($full_name) {
     $this->fullName = $full_name;
     return $this;