■ StorageDiag Utilities

StorageDiag Utilities_

formerly Silas Doctor Utilities

An advanced, Linux-class diagnostic & recovery workbench — running right on your QNAP NAS.

QTS / QuTS hero 5.2+ x86_64ARMv7ARMv8 sdu.qpkg package runs locally

► What it is

StorageDiag Utilities (SDU) is the local-only edition of the live tools from StorageDiagLV, installed directly on the client — your QNAP NAS — from the sdu.qpkg package. Everything runs on that box and reads its own data: SMART/FARM straight from the live drive, /proc, network interfaces, RAM.

This is not a log-dump reader — it is an active workbench. The unprivileged web panel never runs commands itself; it hands operations to a trusted daemon running as root, drawn only from a fixed, allowlisted set of operations (configuration can only disable them, never add). Built for support engineers and admins who need to confirm and act on a live machine.

▲ Note: the live tools hand operations to a root daemon. Use Safe mode and never expose the panel to the public internet without HTTPS, strong credentials and a firewall.

► The live tools

◆ Pulse — performance & process cockpit

CPU/RAM/load meters, a process tree with actions (kill, renice, CPU governor, drop caches) and tabs for network, VMs, databases, logs and a Wireshark-style packet analyzer (recognises SMB, torrents/DHT, SSDP, QNAP discovery; minimap, bookmarks, IP→host resolution).

◆ memhound — RAM tester

An original memory tester with memtest86-style patterns plus a fast test. Its principle: never a false positive — a flagged fault is real to ~99.999%. It also reads the logs: when crashes spread across programs or a machine-check appears, it flags the RAM proactively and walks you up an escalation ladder (quick → suspend-services → offline/boot test).

◆ iostat — I/O monitor & benchmark

Live per-disk throughput, latency and IOPS, plus a Disk Health Scan that pinpoints the weak disk dragging down a whole RAID.

◆ DriveTime — SMART/FARM history

An hourly collector builds a time-series of every disk's attributes — see a value climbing before it trips a hard limit.

◆ iperf3 — network throughput

Bandwidth and retransmits between two NAS units.

◆ vpn-diag — VPN diagnostics

VPN link quality: MTU, jitter, loss, bandwidth and stability.

◆ Terminal (root)

An interactive root shell on the NAS (admin only), through the daemon.

◆ Cheats & Utilities

A palette of ready-to-run recovery/diagnostic commands (Storage, LVM, ZFS, System, Network…) you paste into the Terminal — no memorising.

◆ Pool & Disk — live disk manager

A real window (no more raw terminal): the merged disk table — bay, device, model, capacity, role, pool/volume, state — with one-click graceful hot-unplug and re-add, a full-controller rescan, and a read-only pool-metadata integrity check. Every action confirms first and streams its output live.

◆ MCE Decoder — machine-check analyser

Paste kernel-log / mcelog lines, or scan the live NAS, and every machine-check is decoded into severity, subsystem and a plain-language meaning — with a "leaning" hint (memory vs CPU vs bus) and a how-to-confirm procedure.

► Screenshots

Pulse cockpit: CPU/RAM/load meters and a filterable process tree.

Packet analyzer: protocol colouring, minimap, bookmarks, host badges.

memhound: live memory map, fault counters, status panel.

iostat Disk Health Scan — iostat + Disk Health Scan: latency chart and a per-disk table.

DriveTime: SMART/FARM attribute history over time.

Cheats & Utilities: a palette of ready-to-run recovery commands.

► On-board Linux arsenal

Beyond its own original live tools, SDU carries a ready set of proven command-line utilities — reachable straight from the built-in root terminal and the Cheats palette, statically built for x86_64 / ARMv7 / ARMv8:

Disks & SMART: smartctl 7.4, SeaChest (FARM read), media-health scan tools
Data recovery: testdisk, photorec, ddrescue
Filesystem forensics: The Sleuth Kit — fls, icat, ils, fsstat, blkcat…
Network: nmap, ncat, nping, tcpdump, iperf3
System & processes: strace, ps/pgrep/pkill, vmstat, lsof-lite
Shell work: Midnight Commander (mc), hex editor heh/biew, bash, gawk, sed, find, locate

Categories: storage & RAID · ZFS · disks/SMART · network · processes · data recovery · forensics.

► How it works

Browser → unprivileged PHP → (local socket) → sdlvd daemon (root) → allowlisted tool.
The PHP side never runs commands itself — it asks the daemon for one of a fixed, allowlisted set of operations.
Configuration can only disable operations, never add. Safe mode tightens the daemon.
Login is restricted to QNAP system administrators (from passwd/shadow).

▼ Download — v1.4.07200

Pick the package that matches your NAS CPU, then install it in App Center → Install Manually. Unsure which? Intel/AMD models are x86_64; most ARM models are ARMv8 (aarch64); older ARM units are ARMv7 (armhf).

x86_64Intel / AMD · ~42 MB ARMv8 (aarch64)64-bit ARM · ~41 MB ARMv7 (armhf)32-bit ARM · ~40 MB

► Requirements & install

Platform	QNAP QTS / QuTS hero 5.2+
Architectures	x86_64 · ARMv7 (armhf) · ARMv8 (aarch64) — a separate, lean package (~40 MB) per architecture
Install	manual install of the `sdu.qpkg` package in App Center (Install Manually)
Access	web panel via the QTS proxy (`/sdlv`) or the local port; sign in with an administrator account
Privacy	runs locally on the NAS; nothing goes to the QNAP cloud or to any AI

▲ Licence & disclaimer

Provided “AS IS”, without warranty of any kind. Not a QNAP product — not made, supported or endorsed by QNAP; “QNAP”, “QTS”, “QuTS hero” are marks of QNAP Systems, Inc. Licensed, not sold (no resale/redistribution). The daemon runs as root — handle with care. Liability is limited to the maximum extent permitted by law; this does not limit your statutory consumer rights.