diff --git a/Plugin/unraid/api/monitor.php b/Plugin/unraid/api/monitor.php
index bfe8825..30fc135 100644
--- a/Plugin/unraid/api/monitor.php
+++ b/Plugin/unraid/api/monitor.php
@@ -25,6 +25,7 @@ echo json_encode([
     'parity'      => vv_parity_status(),
     'storage'     => vv_storage_pools(),
     'array_disks' => vv_array_disks(),
+    'disk_io'     => vv_disk_io_rates(),
     'watchdog'       => vv_watchdog_summary(),
     'scripts'        => vv_scripts_status(),
     'thresholds'     => vv_disk_thresholds(),
diff --git a/Plugin/unraid/include/common.php b/Plugin/unraid/include/common.php
index a70579b..3e29c02 100644
--- a/Plugin/unraid/include/common.php
+++ b/Plugin/unraid/include/common.php
@@ -536,6 +536,41 @@ function vv_array_disks(): array {
     return array_merge($parity, $data);
 }
 
+function vv_disk_io_rates(): array {
+    $snapFile = '/tmp/vv_diskio_snap.json';
+    $now      = microtime(true);
+
+    // Read current whole-disk stats from /proc/diskstats
+    $current = [];
+    foreach (@file('/proc/diskstats', FILE_IGNORE_NEW_LINES) ?: [] as $line) {
+        $p = preg_split('/\s+/', trim($line));
+        if (count($p) < 14) continue;
+        $dev = $p[2];
+        // Keep only whole disks: sda/sdb, nvme0n1, md*, not sda1/nvme0n1p1
+        if (!preg_match('/^(sd[a-z]+|nvme\d+n\d+|md\d+)$/', $dev)) continue;
+        $current[$dev] = [(int)$p[5], (int)$p[9]]; // [sectors_read, sectors_written]
+    }
+
+    // Load previous snapshot
+    $snap     = @json_decode(@file_get_contents($snapFile) ?: '', true) ?: [];
+    $prevTime = (float)($snap['t'] ?? $now);
+    $prev     = $snap['d'] ?? [];
+
+    // Save current snapshot
+    @file_put_contents($snapFile, json_encode(['t' => $now, 'd' => $current], JSON_UNESCAPED_UNICODE));
+
+    $dt    = max(0.5, $now - $prevTime);
+    $rates = [];
+    foreach ($current as $dev => [$rs, $ws]) {
+        if (!isset($prev[$dev])) continue;
+        [$prs, $pws] = $prev[$dev];
+        $r = max(0.0, ($rs - $prs) * 512 / $dt / 1048576);
+        $w = max(0.0, ($ws - $pws) * 512 / $dt / 1048576);
+        if ($r > 0.01 || $w > 0.01) $rates[$dev] = [round($r, 1), round($w, 1)];
+    }
+    return $rates;
+}
+
 function vv_disk_thresholds(): array {
     $cfg  = @file_get_contents('/boot/config/plugins/dynamix/dynamix.cfg') ?: '';
     $get  = function(string $key) use ($cfg): ?int {
diff --git a/Plugin/unraid/pages/monitor.php b/Plugin/unraid/pages/monitor.php
index 0dd8277..9aae79c 100644
--- a/Plugin/unraid/pages/monitor.php
+++ b/Plugin/unraid/pages/monitor.php
@@ -208,6 +208,7 @@ let vvNetRxHistory  = [];
 let vvNetTxHistory  = [];
 let vvPoolsOpen      = {};
 let vvPoolGroupOpen  = {};
+let vvDiskIo         = {}; // {device: [readMBs, writeMBs]}
 let vvLastStorageDisks = [];
 
 // ── Canvas chart ──────────────────────────────────────────────────────────────
@@ -506,6 +507,27 @@ function vvTempColor(tempC, transport) {
 
 function vvFmt(v) { return v >= 1024 ? (v / 1024).toFixed(1) + ' TB' : v + ' GB'; }
 
+function vvFmtRate(mbs) {
+  if (mbs >= 1000) return (mbs / 1024).toFixed(1) + ' GB/s';
+  if (mbs >= 100)  return Math.round(mbs) + ' MB/s';
+  return mbs.toFixed(1) + ' MB/s';
+}
+function vvIoChip(dev) {
+  const io = vvDiskIo[dev];
+  if (!io) return '';
+  const [r, w] = io;
+  if (r < 0.05 && w < 0.05) return '';
+  const parts = [];
+  if (r >= 0.05) parts.push(`<span style="color:#3a7a3a;">↓${vvFmtRate(r)}</span>`);
+  if (w >= 0.05) parts.push(`<span style="color:#7a4a1a;">↑${vvFmtRate(w)}</span>`);
+  return `<span style="font-size:9px;margin-left:5px;">${parts.join(' ')}</span>`;
+}
+function vvIoSum(devices) {
+  let r = 0, w = 0;
+  devices.forEach(dev => { const io = vvDiskIo[dev]; if (io) { r += io[0]; w += io[1]; } });
+  return [r, w];
+}
+
 function vvDiskRow(disk) {
   const tempC     = disk.temp;
   const tempColor = vvTempColor(tempC, disk.transport);
@@ -524,7 +546,7 @@ function vvDiskRow(disk) {
     : `<span style="color:#555;font-size:10px;">${vvFmt(disk.used_gb)} / ${vvFmt(disk.size_gb)}</span>`;
   return `<div style="margin-bottom:7px;">
     <div style="display:flex;justify-content:space-between;align-items:center;font-size:11px;margin-bottom:3px;">
-      <span style="color:${nameColor};">${disk.name}${spinLabel}</span>
+      <span style="color:${nameColor};display:flex;align-items:center;">${disk.name}${spinLabel}${vvIoChip(disk.device)}</span>
       ${right}
       <span style="color:${tempColor};font-size:10px;margin-left:6px;flex-shrink:0;">${tempStr}</span>
     </div>
@@ -1183,6 +1205,7 @@ function vvPollMonitor() {
 
 
       // ── Pools ─────────────────────────────────────────────────────────────────
+      vvDiskIo = d.disk_io ?? {};
       vvLastStorageDisks = d.storage ?? [];
       document.getElementById('vv-storage-body').innerHTML = vvRenderPools(vvLastStorageDisks);
 
@@ -1200,6 +1223,13 @@ function vvPollMonitor() {
         const arrPct      = totalSizeGb > 0 ? Math.round(totalUsedGb / totalSizeGb * 100) : 0;
         const arrPctColor = arrPct >= (vvThresholds.util_crit ?? 90) ? '#f44336' : arrPct >= (vvThresholds.util_warn ?? 70) ? '#ff9800' : '#4caf50';
 
+        const [arrIor, arrIow] = vvIoSum(arrayDisks.map(d => d.device));
+        const arrIoParts = [];
+        if (arrIor >= 0.05) arrIoParts.push(`<span style="color:#3a7a3a;">↓${vvFmtRate(arrIor)}</span>`);
+        if (arrIow >= 0.05) arrIoParts.push(`<span style="color:#7a4a1a;">↑${vvFmtRate(arrIow)}</span>`);
+        const arrIoHtml = arrIoParts.length
+          ? `· <span style="font-weight:400;">${arrIoParts.join(' ')}</span>` : '';
+
         const titleEl = document.getElementById('vv-array-title');
         if (titleEl) titleEl.innerHTML = `Array
           <span style="font-size:10px;color:#444;font-weight:400;text-transform:none;letter-spacing:0;margin-left:6px;">
@@ -1207,6 +1237,7 @@ function vvPollMonitor() {
             ${errDisks > 0 ? `<span style="color:#f44336;margin-left:4px;">· ${errDisks} err</span>` : ''}
             · <span style="color:${arrPctColor};">${arrPct}%</span> used
             ${maxTemp != null ? `· <span style="color:${maxTempColor};">max ${maxTemp}°</span>` : ''}
+            ${arrIoHtml}
           </span>`;
 
         const numCols = Math.max(3, Math.ceil(arrayDisks.length / 6));
@@ -1681,6 +1712,13 @@ function vvRenderPools(disks) {
     const allOk       = drives.every(d => d.status === 'DISK_OK' || !d.status);
     const statusColor = allOk ? '#aaa' : '#f44336';
     const sName       = poolName.replace(/\\/g,'\\\\').replace(/'/g,"\\'");
+    const [pIor, pIow] = vvIoSum(drives.map(d => d.device));
+    const poolIoHtml = (() => {
+      const parts = [];
+      if (pIor >= 0.05) parts.push(`<span style="color:#3a7a3a;">↓${vvFmtRate(pIor)}</span>`);
+      if (pIow >= 0.05) parts.push(`<span style="color:#7a4a1a;">↑${vvFmtRate(pIow)}</span>`);
+      return parts.length ? `<span style="font-size:9px;margin-left:5px;">${parts.join(' ')}</span>` : '';
+    })();
 
     let html = `<div style="margin-bottom:8px;">
       <div style="display:flex;justify-content:space-between;align-items:center;font-size:11px;margin-bottom:3px;
@@ -1689,6 +1727,7 @@ function vvRenderPools(disks) {
           ${multi ? `<span style="color:#555;font-size:9px;width:8px;">${isOpen ? '▾' : '▸'}</span>` : '<span style="width:8px;display:inline-block;"></span>'}
           ${poolName}
           ${multi ? `<span style="font-size:9px;color:#444;background:#1a1a1a;padding:0 4px;border-radius:2px;">${drives.length} drives</span>` : ''}
+          ${poolIoHtml}
         </span>
         <span style="display:flex;align-items:center;gap:8px;">
           ${maxTemp != null ? `<span style="color:${tempColor};font-size:10px;">${maxTemp}°</span>` : ''}