diff --git a/web/src/pages/admin/settings/storage-settings-page.tsx b/web/src/pages/admin/settings/storage-settings-page.tsx
index 3c0cb29d4..85b08fe08 100644
--- a/web/src/pages/admin/settings/storage-settings-page.tsx
+++ b/web/src/pages/admin/settings/storage-settings-page.tsx
@@ -1,5 +1,5 @@
-import { App, Button, Form, Input, Select, Space, Switch, Tag } from "antd";
-import { Cloud, Info, KeyRound, ShieldCheck } from "lucide-react";
+import { App, Button, Form, Input, Segmented, Space, Tag } from "antd";
+import { Cloud, HardDrive, Info, KeyRound, ShieldCheck } from "lucide-react";
 import { useEffect, useMemo, useState, type ReactNode } from "react";
 
 import { getAdminOSSSetting, updateAdminOSSSetting, type AdminOSSSetting } from "@/services/api/auth";
@@ -7,7 +7,8 @@ import { useAdminContext } from "../admin-context";
 import { AdminPageFrame } from "../components/admin-shell";
 import { configuredSecretText, SettingsSectionCard } from "../components/admin-ui";
 
-type OSSFormValues = { enabled?: boolean; provider: "aliyun"; region?: string; endpoint?: string; bucket?: string; accessKeyId?: string; accessKeySecret?: string; pathPrefix?: string };
+type StorageMode = "local" | "oss";
+type OSSFormValues = { mode: StorageMode; region?: string; endpoint?: string; bucket?: string; accessKeyId?: string; accessKeySecret?: string; pathPrefix?: string };
 
 export default function StorageSettingsPage() {
     const { message } = App.useApp();
@@ -16,6 +17,7 @@ export default function StorageSettingsPage() {
     const [loading, setLoading] = useState(true);
     const [saving, setSaving] = useState(false);
     const [form] = Form.useForm<OSSFormValues>();
+    const mode = Form.useWatch("mode", form) || "local";
     const userNameById = useMemo(() => new Map(references.users.map((user) => [user.id, user.displayName || user.username])), [references.users]);
 
     useEffect(() => {
@@ -26,56 +28,73 @@ export default function StorageSettingsPage() {
     }, [form, message]);
 
     const save = async () => {
-        const values = await form.validateFields();
-        if (values.enabled && !values.accessKeySecret?.trim() && !setting?.hasAccessKeySecret) return message.error("请填写 AccessKey Secret");
-        if (values.enabled && !values.endpoint?.trim()) return message.error("请填写 OSS Endpoint");
-        if (values.enabled && !values.bucket?.trim()) return message.error("请填写 OSS Bucket");
-        if (values.enabled && !values.accessKeyId?.trim()) return message.error("请填写 AccessKey ID");
+        await form.validateFields();
+        // 本地模式会卸载 OSS 字段，读取完整 store 才能保留已保存的 OSS 配置。
+        const values = form.getFieldsValue(true);
+        if (values.mode === "oss" && !values.accessKeySecret?.trim() && !setting?.hasAccessKeySecret) return message.error("请填写 AccessKey Secret");
+        if (values.mode === "oss" && !values.endpoint?.trim()) return message.error("请填写 OSS Endpoint");
+        if (values.mode === "oss" && !values.bucket?.trim()) return message.error("请填写 OSS Bucket");
+        if (values.mode === "oss" && !values.accessKeyId?.trim()) return message.error("请填写 AccessKey ID");
         setSaving(true);
         try {
-            const result = await updateAdminOSSSetting({ enabled: values.enabled === true, provider: values.provider, region: values.region?.trim() || "", endpoint: values.endpoint?.trim() || "", bucket: values.bucket?.trim() || "", accessKeyId: values.accessKeyId?.trim() || "", accessKeySecret: values.accessKeySecret?.trim() || "", publicBaseUrl: "", pathPrefix: values.pathPrefix?.trim() || "" });
+            const result = await updateAdminOSSSetting({ enabled: values.mode === "oss", provider: "aliyun", region: values.region?.trim() || "", endpoint: values.endpoint?.trim() || "", bucket: values.bucket?.trim() || "", accessKeyId: values.accessKeyId?.trim() || "", accessKeySecret: values.accessKeySecret?.trim() || "", publicBaseUrl: "", pathPrefix: values.pathPrefix?.trim() || "" });
             setSetting(result.setting);
             form.setFieldsValue(formValues(result.setting));
-            message.success("OSS 配置已保存");
+            message.success("存储配置已保存");
         } catch (error) {
-            message.error(error instanceof Error ? error.message : "保存 OSS 配置失败");
+            message.error(error instanceof Error ? error.message : "保存存储配置失败");
         } finally {
             setSaving(false);
         }
     };
 
     return (
-        <AdminPageFrame title="存储服务" description="OSS 与资源存储">
+        <AdminPageFrame title="存储服务" description="配置新增资源的默认存储位置">
             <div className="space-y-4 pt-4">
                 <div className="border-b border-border px-1 pb-4 text-foreground/75">
-                    <div className="flex items-start gap-3"><span className="mt-0.5 grid size-8 shrink-0 place-items-center rounded-md bg-muted/60"><Info className="size-4" /></span><div><div className="text-sm font-semibold text-foreground">资源存储规则</div><p className="mt-1 text-xs leading-6 text-foreground/55">启用后，新上传和生成的媒体由后端写入 OSS；未启用时写入后端数据卷。资源统一通过登录鉴权接口读取，不直接暴露 OSS 对象地址。</p></div></div>
+                    <div className="flex items-start gap-3"><span className="mt-0.5 grid size-8 shrink-0 place-items-center rounded-md bg-muted/60"><Info className="size-4" /></span><div><div className="text-sm font-semibold text-foreground">资源存储规则</div><p className="mt-1 text-xs leading-6 text-foreground/55">存储类型只影响之后新增的媒体资源，不迁移或改写历史文件。服务器本地与 OSS 资源均通过登录鉴权接口读取。</p></div></div>
                 </div>
                 <SettingsSectionCard
                     icon={<Cloud className="size-4" />}
-                    title="平台 OSS"
-                    description="配置平台媒体资源的默认存储位置。"
-                    status={<Space size={6}><Tag variant="filled" color={setting?.enabled ? "success" : "default"}>{setting?.enabled ? "已启用" : "未启用"}</Tag><Tag variant="filled" color={setting?.hasAccessKeySecret ? "blue" : "warning"}>{setting?.hasAccessKeySecret ? configuredSecretText : "未保存密钥"}</Tag></Space>}
-                    footer={<><div className="text-xs text-foreground/45">{setting?.updatedAt ? `上次更新：${formatTime(setting.updatedAt)}${setting.updatedBy ? ` · ${userNameById.get(setting.updatedBy) || setting.updatedBy}` : ""}` : "尚未保存 OSS 配置"}</div><Button type="primary" loading={saving} onClick={() => void save()}>保存 OSS 配置</Button></>}
+                    title="平台存储"
+                    description="选择平台新增媒体资源的默认写入方式。"
+                    status={<Space size={6}><Tag variant="filled" color={setting?.enabled ? "blue" : "default"}>{setting?.enabled ? "阿里云 OSS" : "服务器本地"}</Tag>{setting?.enabled ? <Tag variant="filled" color={setting.hasAccessKeySecret ? "success" : "warning"}>{setting.hasAccessKeySecret ? configuredSecretText : "未保存密钥"}</Tag> : null}</Space>}
+                    footer={<><div className="text-xs text-foreground/45">{setting?.updatedAt ? `上次更新：${formatTime(setting.updatedAt)}${setting.updatedBy ? ` · ${userNameById.get(setting.updatedBy) || setting.updatedBy}` : ""}` : "尚未保存平台存储配置"}</div><Button type="primary" loading={saving} onClick={() => void save()}>保存存储配置</Button></>}
                 >
                     <Form form={form} layout="vertical" requiredMark={false} disabled={loading}>
                         <div className="grid grid-cols-1 gap-x-5 px-5 pt-5 md:grid-cols-2">
-                            <Form.Item name="enabled" label="启用 OSS" valuePropName="checked"><Switch /></Form.Item>
-                            <Form.Item name="provider" label="存储渠道" rules={[{ required: true, message: "请选择存储渠道" }]}><Select options={[{ label: "阿里云 OSS", value: "aliyun" }]} /></Form.Item>
-                            <Form.Item name="region" label="Region"><Input autoComplete="off" placeholder="例如：oss-cn-hangzhou" /></Form.Item>
-                            <Form.Item name="endpoint" label="Endpoint"><Input autoComplete="off" placeholder="https://oss-cn-hangzhou.aliyuncs.com" /></Form.Item>
-                            <Form.Item name="bucket" label="Bucket"><Input autoComplete="off" placeholder="例如：my-canvas-assets" /></Form.Item>
-                            <Form.Item name="pathPrefix" label="路径前缀"><Input autoComplete="off" placeholder="例如：uploads/infinite-canvas" /></Form.Item>
-                            <Form.Item name="accessKeyId" label="AccessKey ID"><Input autoComplete="off" placeholder="阿里云 AccessKey ID" /></Form.Item>
-                            <Form.Item name="accessKeySecret" label={setting?.hasAccessKeySecret ? `AccessKey Secret（${configuredSecretText}）` : "AccessKey Secret"}><Input.Password autoComplete="new-password" placeholder={setting?.hasAccessKeySecret ? "留空保留原密钥" : "阿里云 AccessKey Secret"} /></Form.Item>
+                            <Form.Item className="md:col-span-2" name="mode" label="存储类型" rules={[{ required: true, message: "请选择存储类型" }]}>
+                                <Segmented<StorageMode>
+                                    block
+                                    options={[
+                                        { label: <span className="inline-flex items-center gap-2"><HardDrive className="size-4" />服务器本地</span>, value: "local" },
+                                        { label: <span className="inline-flex items-center gap-2"><Cloud className="size-4" />阿里云 OSS</span>, value: "oss" },
+                                    ]}
+                                />
+                            </Form.Item>
+                            {mode === "oss" ? (
+                                <>
+                                    <Form.Item name="region" label="Region"><Input autoComplete="off" placeholder="例如：oss-cn-hangzhou" /></Form.Item>
+                                    <Form.Item name="endpoint" label="Endpoint"><Input autoComplete="off" placeholder="https://oss-cn-hangzhou.aliyuncs.com" /></Form.Item>
+                                    <Form.Item name="bucket" label="Bucket"><Input autoComplete="off" placeholder="例如：my-canvas-assets" /></Form.Item>
+                                    <Form.Item name="pathPrefix" label="路径前缀"><Input autoComplete="off" placeholder="例如：uploads/infinite-canvas" /></Form.Item>
+                                    <Form.Item name="accessKeyId" label="AccessKey ID"><Input autoComplete="off" placeholder="阿里云 AccessKey ID" /></Form.Item>
+                                    <Form.Item name="accessKeySecret" label={setting?.hasAccessKeySecret ? `AccessKey Secret（${configuredSecretText}）` : "AccessKey Secret"}><Input.Password autoComplete="new-password" placeholder={setting?.hasAccessKeySecret ? "留空保留原密钥" : "阿里云 AccessKey Secret"} /></Form.Item>
+                                </>
+                            ) : (
+                                <div className="md:col-span-2 border-t border-border py-4 text-sm text-foreground/65">
+                                    新增资源将写入后端数据目录的 <code className="text-foreground">resources/</code>，部署时需持久化该数据卷。
+                                </div>
+                            )}
                         </div>
                     </Form>
                 </SettingsSectionCard>
-                <div className="grid border-y border-border text-xs text-foreground/55 sm:grid-cols-3 sm:divide-x sm:divide-border"><Notice icon={<Cloud className="size-3.5" />} text="新资源优先上传 OSS" /><Notice icon={<ShieldCheck className="size-3.5" />} text="AccessKey Secret 不回显" /><Notice icon={<KeyRound className="size-3.5" />} text="异常时自动本地降级" /></div>
+                <div className="grid border-y border-border text-xs text-foreground/55 sm:grid-cols-3 sm:divide-x sm:divide-border"><Notice icon={mode === "oss" ? <Cloud className="size-3.5" /> : <HardDrive className="size-3.5" />} text={mode === "oss" ? "新资源写入阿里云 OSS" : "新资源写入服务器数据卷"} /><Notice icon={<ShieldCheck className="size-3.5" />} text="历史资源位置保持不变" /><Notice icon={<KeyRound className="size-3.5" />} text="资源读取继续校验登录态" /></div>
             </div>
         </AdminPageFrame>
     );
 }
 
-function formValues(setting?: AdminOSSSetting | null): OSSFormValues { return { enabled: setting?.enabled || false, provider: setting?.provider || "aliyun", region: setting?.region || "", endpoint: setting?.endpoint || "", bucket: setting?.bucket || "", accessKeyId: setting?.accessKeyId || "", accessKeySecret: "", pathPrefix: setting?.pathPrefix || "" }; }
+function formValues(setting?: AdminOSSSetting | null): OSSFormValues { return { mode: setting?.enabled ? "oss" : "local", region: setting?.region || "", endpoint: setting?.endpoint || "", bucket: setting?.bucket || "", accessKeyId: setting?.accessKeyId || "", accessKeySecret: "", pathPrefix: setting?.pathPrefix || "" }; }
 function formatTime(value?: string) { return value ? new Date(value).toLocaleString("zh-CN", { hour12: false }) : "--"; }
 function Notice({ icon, text }: { icon: ReactNode; text: string }) { return <div className="flex items-center gap-2 px-3 py-2.5"><span className="text-foreground/40">{icon}</span><span>{text}</span></div>; }