diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7d539c5..ce84d59 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -224,6 +224,8 @@ jobs:
 
           cp perl5/PVE/Storage/Custom/TrueNASMultipath.pm \
             "${STAGING}/usr/share/truenas-proxmox-multipath/TrueNASMultipath.pm"
+          cp ui/truenas-multipath.js \
+            "${STAGING}/usr/share/truenas-proxmox-multipath/truenas-multipath.js"
           cp packaging/DEBIAN-multipath/multipath.conf.example \
             "${STAGING}/usr/share/truenas-proxmox-multipath/multipath.conf.example"
 
diff --git a/packaging/DEBIAN-multipath/postinst b/packaging/DEBIAN-multipath/postinst
index 14ecb5a..e5f2b80 100644
--- a/packaging/DEBIAN-multipath/postinst
+++ b/packaging/DEBIAN-multipath/postinst
@@ -4,6 +4,9 @@ set -e
 
 INSTALL_DIR="/usr/share/truenas-proxmox-multipath"
 PLUGIN_DST="/usr/share/perl5/PVE/Storage/Custom/TrueNASMultipath.pm"
+JS_DST="/usr/share/pve-manager/js/truenas-multipath.js"
+TPL="/usr/share/pve-manager/index.html.tpl"
+SCRIPT_TAG='    <script type="text/javascript" src="/pve2/js/truenas-multipath.js?ver=[% version %]"></script>'
 MULTIPATH_CONF="/etc/multipath.conf"
 LOG_FILE="/var/log/truenas-proxmox-install.log"
 
@@ -17,6 +20,19 @@ install_plugin() {
     cp "${INSTALL_DIR}/TrueNASMultipath.pm" "$PLUGIN_DST"
 }
 
+install_ui() {
+    log "Installing ${JS_DST}"
+    cp "${INSTALL_DIR}/truenas-multipath.js" "$JS_DST"
+
+    if grep -qF 'truenas-multipath.js' "$TPL" 2>/dev/null; then
+        log "index.html.tpl already has truenas-multipath.js — skipping"
+        return 0
+    fi
+
+    log "Adding <script> tag to ${TPL}"
+    sed -i "/pvemanagerlib\.js/a\\${SCRIPT_TAG}" "$TPL"
+}
+
 BLOCK_BEGIN="# BEGIN truenas-proxmox-multipath"
 BLOCK_END="# END truenas-proxmox-multipath"
 
@@ -73,6 +89,7 @@ case "$1" in
     configure)
         log "Configuring truenas-proxmox-multipath (previous version: ${2:-none})"
         install_plugin
+        install_ui
         install_multipath_conf
         restart_pve_services
         ;;
diff --git a/packaging/DEBIAN-multipath/postrm b/packaging/DEBIAN-multipath/postrm
index 564e08d..eb5b943 100644
--- a/packaging/DEBIAN-multipath/postrm
+++ b/packaging/DEBIAN-multipath/postrm
@@ -3,6 +3,8 @@
 set -e
 
 PLUGIN_DST="/usr/share/perl5/PVE/Storage/Custom/TrueNASMultipath.pm"
+JS_DST="/usr/share/pve-manager/js/truenas-multipath.js"
+TPL="/usr/share/pve-manager/index.html.tpl"
 MULTIPATH_CONF="/etc/multipath.conf"
 BLOCK_BEGIN="# BEGIN truenas-proxmox-multipath"
 BLOCK_END="# END truenas-proxmox-multipath"
@@ -19,6 +21,16 @@ case "$1" in
             rm -f "$PLUGIN_DST"
         fi
 
+        if [ -f "$JS_DST" ]; then
+            log "Removing ${JS_DST}"
+            rm -f "$JS_DST"
+        fi
+
+        if [ -f "$TPL" ] && grep -qF 'truenas-multipath.js' "$TPL" 2>/dev/null; then
+            log "Removing <script> tag from ${TPL}"
+            sed -i '/truenas-multipath\.js/d' "$TPL"
+        fi
+
         if [ -f "$MULTIPATH_CONF" ] && grep -qF "$BLOCK_BEGIN" "$MULTIPATH_CONF"; then
             log "Removing TrueNAS stanza from ${MULTIPATH_CONF}"
             perl -i -0777 -pe \
diff --git a/ui/truenas-multipath.js b/ui/truenas-multipath.js
new file mode 100644
index 0000000..2f89885
--- /dev/null
+++ b/ui/truenas-multipath.js
@@ -0,0 +1,122 @@
+// TrueNAS Multipath Storage Plugin — Proxmox VE UI
+//
+// Registers the 'truenas-multipath' storage type in PVE's UI schema and defines
+// the configuration panel shown when adding or editing TrueNAS Multipath storage.
+//
+// Only loaded on nodes where truenas-proxmox-multipath is installed, so the type
+// does not appear in the Add dropdown on nodes without the package.
+
+PVE.Utils.storageSchema['truenas-multipath'] = {
+    name: 'TrueNAS Multipath (ZFS/iSCSI)',
+    ipanel: 'TrueNASMultipathInputPanel',
+    faIcon: 'database',
+    backups: false,
+};
+
+Ext.define('PVE.storage.TrueNASMultipathInputPanel', {
+    extend: 'PVE.panel.StorageBase',
+
+    initComponent: function () {
+        let me = this;
+
+        // Column 1 — identity and credentials (left side)
+        me.column1 = [
+            {
+                xtype: me.isCreate ? 'proxmoxtextfield' : 'displayfield',
+                fieldLabel: gettext('TrueNAS Host'),
+                name: 'truenas_host',
+                allowBlank: false,
+                autoComplete: false,
+                inputAttrTpl: 'autocomplete="url"',
+                emptyText: gettext('hostname or IP address'),
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('API Key'),
+                name: 'truenas_api_key',
+                inputType: 'password',
+                allowBlank: !me.isCreate,
+                autoComplete: false,
+                inputAttrTpl: 'autocomplete="new-password"',
+                emptyText: me.isCreate
+                    ? gettext('Paste API key from TrueNAS UI')
+                    : gettext('unchanged — paste new key to change'),
+                triggers: {
+                    reveal: {
+                        cls: 'truenas-reveal-trigger',
+                        tooltip: gettext('Show / hide API key'),
+                        handler: function (field) {
+                            let dom = field.inputEl.dom;
+                            dom.type = dom.type === 'password' ? 'text' : 'password';
+                        },
+                    },
+                },
+                listeners: {
+                    afterrender: function (field) {
+                        if (!me.isCreate) {
+                            field.submitValue = false;
+                        }
+                    },
+                    change: function (field, value) {
+                        if (!me.isCreate) {
+                            field.submitValue = (value && value.length > 0);
+                        }
+                    },
+                },
+            },
+            {
+                xtype: me.isCreate ? 'proxmoxtextfield' : 'displayfield',
+                fieldLabel: gettext('Pool / Dataset Path'),
+                name: 'truenas_pool',
+                allowBlank: false,
+                autoComplete: false,
+                emptyText: gettext('ZFS path where volumes live (e.g. tank or tank/proxmox/vdisks)'),
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('Sub-dataset'),
+                name: 'truenas_dataset',
+                allowBlank: true,
+                autoComplete: false,
+                emptyText: gettext('Leave blank — extra sub-path below Pool if needed'),
+                deleteEmpty: !me.isCreate,
+            },
+        ];
+
+        // Column 2 — connection and multipath options (right side)
+        // Note: Nodes selector and Enable checkbox are prepended by StorageBase
+        me.column2 = [
+            {
+                xtype: 'proxmoxcheckbox',
+                fieldLabel: gettext('Shared'),
+                name: 'shared',
+                checked: true,
+                uncheckedValue: 0,
+            },
+            {
+                xtype: 'proxmoxcheckbox',
+                fieldLabel: gettext('Use SSL'),
+                name: 'truenas_ssl',
+                checked: true,
+                uncheckedValue: 0,
+            },
+            {
+                xtype: 'proxmoxcheckbox',
+                fieldLabel: gettext('Verify SSL Certificate'),
+                name: 'truenas_ssl_verify',
+                checked: false,
+                uncheckedValue: 0,
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('Portal IPs'),
+                name: 'truenas_portals',
+                allowBlank: false,
+                autoComplete: false,
+                emptyText: gettext('Comma-separated portal IPs (e.g. 172.31.x.x,192.168.x.x)'),
+            },
+        ];
+
+        me.callParent();
+    },
+});