diff --git a/apps/dav/lib/Connector/Sabre/Node.php b/apps/dav/lib/Connector/Sabre/Node.php
index 075ea2dd65bfb..224356b9bd728 100644
--- a/apps/dav/lib/Connector/Sabre/Node.php
+++ b/apps/dav/lib/Connector/Sabre/Node.php
@@ -16,6 +16,7 @@
 use OCP\Files\FileInfo;
 use OCP\Files\IRootFolder;
 use OCP\Files\NotFoundException;
+use OCP\Files\Storage\ISharedStorage;
 use OCP\Files\StorageNotAvailableException;
 use OCP\Share\Exceptions\ShareNotFound;
 use OCP\Share\IManager;
@@ -262,8 +263,8 @@ public function getSharePermissions($user) {
 			$storage = null;
 		}
 
-		if ($storage && $storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
-			/** @var \OCA\Files_Sharing\SharedStorage $storage */
+		if ($storage && $storage->instanceOfStorage(ISharedStorage::class)) {
+			/** @var ISharedStorage $storage */
 			$permissions = (int)$storage->getShare()->getPermissions();
 		} else {
 			$permissions = $this->info->getPermissions();
@@ -306,8 +307,8 @@ public function getShareAttributes(): array {
 		}
 
 		$attributes = [];
-		if (method_exists($storage, 'getShare')) {
-			/** @var \OCA\Files_Sharing\SharedStorage $storage */
+		if ($storage->instanceOfStorage(ISharedStorage::class)) {
+			/** @var ISharedStorage $storage */
 			$attributes = $storage->getShare()->getAttributes();
 			if ($attributes === null) {
 				return [];
@@ -326,17 +327,17 @@ public function getNoteFromShare(?string $user): string {
 			return '';
 		}
 
-		if (!method_exists($storage, 'getShare')) {
-			return '';
+		$note = '';
+		if ($storage->instanceOfStorage(ISharedStorage::class)) {
+			/** @var ISharedStorage $storage */
+			$share = $storage->getShare();
+			$note = $share->getNote();
+			if ($user === $share->getShareOwner()) {
+				// Note is only for recipient not the owner
+				return '';
+			}
 		}
-		/** @var \OCA\Files_Sharing\SharedStorage $storage */
 
-		$share = $storage->getShare();
-		$note = $share->getNote();
-		if ($user === $share->getShareOwner()) {
-			// Note is only for recipient not the owner
-			return '';
-		}
 		return $note;
 	}
 
diff --git a/apps/dav/lib/DAV/ViewOnlyPlugin.php b/apps/dav/lib/DAV/ViewOnlyPlugin.php
index 80d0ddc8cf998..b6139638aa5e5 100644
--- a/apps/dav/lib/DAV/ViewOnlyPlugin.php
+++ b/apps/dav/lib/DAV/ViewOnlyPlugin.php
@@ -13,6 +13,7 @@
 use OCA\Files_Versions\Sabre\VersionFile;
 use OCP\Files\Folder;
 use OCP\Files\NotFoundException;
+use OCP\Files\Storage\ISharedStorage;
 use Sabre\DAV\Exception\NotFound;
 use Sabre\DAV\Server;
 use Sabre\DAV\ServerPlugin;
@@ -81,11 +82,11 @@ public function checkViewOnly(RequestInterface $request): bool {
 
 			$storage = $node->getStorage();
 
-			if (!$storage->instanceOfStorage(\OCA\Files_Sharing\SharedStorage::class)) {
+			if (!$storage->instanceOfStorage(ISharedStorage::class)) {
 				return true;
 			}
 			// Extract extra permissions
-			/** @var \OCA\Files_Sharing\SharedStorage $storage */
+			/** @var ISharedStorage $storage */
 			$share = $storage->getShare();
 
 			$attributes = $share->getAttributes();
diff --git a/apps/dav/lib/Storage/PublicShareWrapper.php b/apps/dav/lib/Storage/PublicShareWrapper.php
index fb24abda9d042..bd735aa0be074 100644
--- a/apps/dav/lib/Storage/PublicShareWrapper.php
+++ b/apps/dav/lib/Storage/PublicShareWrapper.php
@@ -9,6 +9,7 @@
 namespace OCA\DAV\Storage;
 
 use OC\Files\Storage\Wrapper\Wrapper;
+use OCP\Files\Storage\ISharedStorage;
 use OCP\Share\IShare;
 
 class PublicShareWrapper extends Wrapper {
@@ -29,7 +30,7 @@ public function __construct($arguments) {
 	public function getShare(): IShare {
 		$storage = parent::getWrapperStorage();
 		if (method_exists($storage, 'getShare')) {
-			/** @var \OCA\Files_Sharing\SharedStorage $storage */
+			/** @var ISharedStorage $storage */
 			return $storage->getShare();
 		}
 
diff --git a/apps/dav/tests/unit/Connector/Sabre/NodeTest.php b/apps/dav/tests/unit/Connector/Sabre/NodeTest.php
index 17550a2874f01..83f4139a2d9ef 100644
--- a/apps/dav/tests/unit/Connector/Sabre/NodeTest.php
+++ b/apps/dav/tests/unit/Connector/Sabre/NodeTest.php
@@ -10,6 +10,7 @@
 
 use OC\Files\FileInfo;
 use OC\Files\Mount\MountPoint;
+use OC\Files\Node\Folder;
 use OC\Files\View;
 use OC\Share20\ShareAttributes;
 use OCA\Files_Sharing\SharedMount;
@@ -21,6 +22,7 @@
 use OCP\ICache;
 use OCP\Share\IManager;
 use OCP\Share\IShare;
+use PHPUnit\Framework\MockObject\MockObject;
 
 /**
  * Class NodeTest
@@ -201,14 +203,16 @@ public function testShareAttributes(): void {
 
 		$share->expects($this->once())->method('getAttributes')->willReturn($attributes);
 
-		$info = $this->getMockBuilder(FileInfo::class)
+		/** @var Folder&MockObject $info */
+		$info = $this->getMockBuilder(Folder::class)
 			->disableOriginalConstructor()
-			->setMethods(['getStorage', 'getType'])
+			->onlyMethods(['getStorage', 'getType'])
 			->getMock();
 
 		$info->method('getStorage')->willReturn($storage);
 		$info->method('getType')->willReturn(FileInfo::TYPE_FOLDER);
 
+		/** @var View&MockObject $view */
 		$view = $this->getMockBuilder(View::class)
 			->disableOriginalConstructor()
 			->getMock();
@@ -225,14 +229,16 @@ public function testShareAttributesNonShare(): void {
 
 		$shareManager = $this->getMockBuilder(IManager::class)->disableOriginalConstructor()->getMock();
 
-		$info = $this->getMockBuilder(FileInfo::class)
+		/** @var Folder&MockObject */
+		$info = $this->getMockBuilder(Folder::class)
 			->disableOriginalConstructor()
-			->setMethods(['getStorage', 'getType'])
+			->onlyMethods(['getStorage', 'getType'])
 			->getMock();
 
 		$info->method('getStorage')->willReturn($storage);
 		$info->method('getType')->willReturn(FileInfo::TYPE_FOLDER);
 
+		/** @var View&MockObject */
 		$view = $this->getMockBuilder(View::class)
 			->disableOriginalConstructor()
 			->getMock();
diff --git a/apps/dav/tests/unit/DAV/ViewOnlyPluginTest.php b/apps/dav/tests/unit/DAV/ViewOnlyPluginTest.php
index 63dd5b9145cae..eb15bfe0b5a19 100644
--- a/apps/dav/tests/unit/DAV/ViewOnlyPluginTest.php
+++ b/apps/dav/tests/unit/DAV/ViewOnlyPluginTest.php
@@ -15,6 +15,7 @@
 use OCA\Files_Versions\Versions\IVersion;
 use OCP\Files\File;
 use OCP\Files\Folder;
+use OCP\Files\Storage\ISharedStorage;
 use OCP\Files\Storage\IStorage;
 use OCP\IUser;
 use OCP\Share\IAttributes;
@@ -65,7 +66,7 @@ public function testCanGetNonShared(): void {
 
 		$storage = $this->createMock(IStorage::class);
 		$file->method('getStorage')->willReturn($storage);
-		$storage->method('instanceOfStorage')->with(SharedStorage::class)->willReturn(false);
+		$storage->method('instanceOfStorage')->with(ISharedStorage::class)->willReturn(false);
 
 		$this->assertTrue($this->plugin->checkViewOnly($this->request));
 	}
@@ -140,7 +141,7 @@ public function testCanGet(bool $isVersion, ?bool $attrEnabled, bool $expectCanD
 		$nodeInfo->expects($this->once())
 			->method('getStorage')
 			->willReturn($storage);
-		$storage->method('instanceOfStorage')->with(SharedStorage::class)->willReturn(true);
+		$storage->method('instanceOfStorage')->with(ISharedStorage::class)->willReturn(true);
 		$storage->method('getShare')->willReturn($share);
 
 		$extAttr = $this->createMock(IAttributes::class);
diff --git a/apps/files_sharing/lib/ISharedStorage.php b/apps/files_sharing/lib/ISharedStorage.php
index 8a8e6bc10a944..dfd8b134db19f 100644
--- a/apps/files_sharing/lib/ISharedStorage.php
+++ b/apps/files_sharing/lib/ISharedStorage.php
@@ -8,5 +8,8 @@
 
 use OCP\Files\Storage\IStorage;
 
+/**
+ * @deprecated 30.0.0 use `\OCP\Files\Storage\ISharedStorage` instead
+ */
 interface ISharedStorage extends IStorage {
 }
diff --git a/apps/files_sharing/lib/SharedStorage.php b/apps/files_sharing/lib/SharedStorage.php
index f8b318dcc5b91..386553a51edfd 100644
--- a/apps/files_sharing/lib/SharedStorage.php
+++ b/apps/files_sharing/lib/SharedStorage.php
@@ -18,15 +18,16 @@
 use OC\Files\Storage\Wrapper\Wrapper;
 use OC\User\NoUserException;
 use OCA\Files_External\Config\ConfigAdapter;
+use OCA\Files_Sharing\ISharedStorage as LegacyISharedStorage;
 use OCP\Constants;
 use OCP\Files\Cache\ICacheEntry;
 use OCP\Files\Config\IUserMountCache;
 use OCP\Files\Folder;
 use OCP\Files\IHomeStorage;
 use OCP\Files\IRootFolder;
-use OCP\Files\Node;
 use OCP\Files\NotFoundException;
 use OCP\Files\Storage\IDisableEncryptionStorage;
+use OCP\Files\Storage\ISharedStorage;
 use OCP\Files\Storage\IStorage;
 use OCP\Lock\ILockingProvider;
 use OCP\Share\IShare;
@@ -35,7 +36,7 @@
 /**
  * Convert target path to source path and pass the function call to the correct storage provider
  */
-class SharedStorage extends \OC\Files\Storage\Wrapper\Jail implements ISharedStorage, IDisableEncryptionStorage {
+class SharedStorage extends \OC\Files\Storage\Wrapper\Jail implements LegacyISharedStorage, ISharedStorage, IDisableEncryptionStorage {
 	/** @var \OCP\Share\IShare */
 	private $superShare;
 
diff --git a/apps/files_versions/lib/Versions/LegacyVersionsBackend.php b/apps/files_versions/lib/Versions/LegacyVersionsBackend.php
index 1483d03bcc6c3..b5b948dda5bc1 100644
--- a/apps/files_versions/lib/Versions/LegacyVersionsBackend.php
+++ b/apps/files_versions/lib/Versions/LegacyVersionsBackend.php
@@ -12,8 +12,6 @@
 use Exception;
 use OC\Files\View;
 use OCA\DAV\Connector\Sabre\Exception\Forbidden;
-use OCA\Files_Sharing\ISharedStorage;
-use OCA\Files_Sharing\SharedStorage;
 use OCA\Files_Versions\Db\VersionEntity;
 use OCA\Files_Versions\Db\VersionsMapper;
 use OCA\Files_Versions\Storage;
@@ -24,6 +22,7 @@
 use OCP\Files\IRootFolder;
 use OCP\Files\Node;
 use OCP\Files\NotFoundException;
+use OCP\Files\Storage\ISharedStorage;
 use OCP\Files\Storage\IStorage;
 use OCP\IUser;
 use OCP\IUserManager;
@@ -48,7 +47,7 @@ public function useBackendForStorage(IStorage $storage): bool {
 	public function getVersionsForFile(IUser $user, FileInfo $file): array {
 		$storage = $file->getStorage();
 
-		if ($storage->instanceOfStorage(SharedStorage::class)) {
+		if ($storage->instanceOfStorage(ISharedStorage::class)) {
 			$owner = $storage->getOwner('');
 			$user = $this->userManager->get($owner);
 
@@ -192,7 +191,7 @@ public function getVersionFile(IUser $user, FileInfo $sourceFile, $revision): Fi
 
 		// Shared files have their versions in the owners root folder so we need to obtain them from there
 		if ($storage->instanceOfStorage(ISharedStorage::class) && $owner) {
-			/** @var SharedStorage $storage */
+			/** @var ISharedStorage $storage */
 			$userFolder = $this->rootFolder->getUserFolder($owner->getUID());
 			$user = $owner;
 			$ownerPathInStorage = $sourceFile->getInternalPath();
diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index 8a6c6f8ccc2b4..7c44d95422349 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -432,6 +432,7 @@
     'OCP\\Files\\Storage\\ILockingStorage' => $baseDir . '/lib/public/Files/Storage/ILockingStorage.php',
     'OCP\\Files\\Storage\\INotifyStorage' => $baseDir . '/lib/public/Files/Storage/INotifyStorage.php',
     'OCP\\Files\\Storage\\IReliableEtagStorage' => $baseDir . '/lib/public/Files/Storage/IReliableEtagStorage.php',
+    'OCP\\Files\\Storage\\ISharedStorage' => $baseDir . '/lib/public/Files/Storage/ISharedStorage.php',
     'OCP\\Files\\Storage\\IStorage' => $baseDir . '/lib/public/Files/Storage/IStorage.php',
     'OCP\\Files\\Storage\\IStorageFactory' => $baseDir . '/lib/public/Files/Storage/IStorageFactory.php',
     'OCP\\Files\\Storage\\IWriteStreamStorage' => $baseDir . '/lib/public/Files/Storage/IWriteStreamStorage.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 3b758ff71fe93..63fa40d39bf78 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -465,6 +465,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OCP\\Files\\Storage\\ILockingStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/ILockingStorage.php',
         'OCP\\Files\\Storage\\INotifyStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/INotifyStorage.php',
         'OCP\\Files\\Storage\\IReliableEtagStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/IReliableEtagStorage.php',
+        'OCP\\Files\\Storage\\ISharedStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/ISharedStorage.php',
         'OCP\\Files\\Storage\\IStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/IStorage.php',
         'OCP\\Files\\Storage\\IStorageFactory' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/IStorageFactory.php',
         'OCP\\Files\\Storage\\IWriteStreamStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/IWriteStreamStorage.php',
diff --git a/lib/public/Files/Storage/ISharedStorage.php b/lib/public/Files/Storage/ISharedStorage.php
new file mode 100644
index 0000000000000..836c4aefcdbe6
--- /dev/null
+++ b/lib/public/Files/Storage/ISharedStorage.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Files\Storage;
+
+use OCP\Share\IShare;
+
+/**
+ * Interface for a storage that is based on a file share
+ *
+ * @since 30.0.0
+ */
+interface ISharedStorage extends IStorage {
+	/**
+	 * The the associated share
+	 *
+	 * @return IShare
+	 * @since 30.0.0
+	 */
+	public function getShare(): IShare;
+}