CertiStack autonomously verifies your Proxmox Backup Server snapshots by streaming deduplicated chunks on demand into air-gapped SDN sandboxes, executing deterministic wire-level probes, and generating cryptographically signed compliance binders.
[03:00:01] INFO Host admission check: RAM 41.2% (max 85%), IO wait 0.8% (max 12%) → ADMISSION GRANTED
[03:00:02] INFO Provisioning ephemeral isolated SDN zone: cs_sb_44 (No Gateway, No SNAT)
[03:00:03] INFO Mounting PBS backup snapshot vm/100/2026-09-13T02:00:00Z via read-only loopback (/dev/loop2)
[03:00:03] INFO Created volatile COW delta overlay: /tmp/certistack-9001.qcow2 (Zero bytes restored to hypervisor storage)
[03:00:05] INFO Launching ephemeral sandbox VM 9001 (cgroups cpu.weight=50)...
[03:00:18] INFO [Stage 1] QMP hypervisor handshake established → VM RUNNING (13.2s)
[03:00:32] INFO [Stage 2] Synthetic wire probe: HTTP GET https://10.100.0.10:8443/healthz → 200 OK (latency=4.2ms)
[03:00:33] INFO [Stage 3] Guest Agent probe: Active Directory DS status → SERVICE_RUNNING
[03:00:35] INFO [Stage 4] Forensic framebuffer capture: login prompt detected → SCREENSHOT VERIFIED
[03:00:36] INFO Unwinding LIFO cleanup stack: VM destroyed, COW delta shredded, loopback unmapped, SDN zone purged
[03:00:37] SUCCESS DR Validation Plan Passed | RTO: 34.1s | Ed25519 Certificate: /var/lib/certistack/reports/dr_cert_9a4f.html
Never restore a 2TB disk image to hypervisor storage just to test it. CertiStack streams deduplicated PBS chunks directly over read-only loopback devices backed by temporary volatile copy-on-write overlays.
Ephemeral SDN sandboxes isolate boot tests with strictly no default gateways, no SNAT, and no bridge to your production LAN. Cloned domain controllers and database servers boot without triggering split-brain IP conflicts.
A booted VM isn't a functional VM. CertiStack executes deterministic multi-stage verification: QMP hypervisor telemetry, wire-level TCP/HTTP/DNS handshakes, guest agent inspection, and forensic framebuffer captures.
Automatically generate executive HTML and PDF compliance packages mapped directly to DORA Article 11, SOC 2 CC7.4, HIPAA §164.308, and ISO 27001 A.12.3, sealed with immutable Ed25519 digital signatures.
Integrate natively with HaloPSA, ConnectWise, Slack, Teams, and Discord. Automatically trigger DR verification runs the exact second Proxmox Backup Server completes a scheduled backup job via incoming webhooks.
Every allocated resource—loopback block devices, ephemeral SDN zones, firewall rules, and COW overlays—is registered in a thread-safe LIFO unwind stack that executes cleanly on test finish, failure, or SIGTERM.
| Feature / Dimension | Manual / Scripted Restore | Veeam SureBackup (VMware) | CertiStack for Proxmox |
|---|---|---|---|
| Storage Write Amplification | 100% full disk write to storage | vPower NFS cache | 0% (PBS chunk loopback stream) |
| Network Collision Risk | High (requires manual VLAN unbind) | Isolated Virtual Lab | Guaranteed (Proxmox SDN Sandbox) |
| Verification Depth | Manual human login check | Ping + basic port probe | QMP + Wire Handshake + QGA + OCR |
| Host Resource Safety | None (can crash hypervisor) | ESXi host throttling | Linux cgroups v2 + /proc admission |
| Compliance Attestation | None (unverified spreadsheet) | Basic email report | Ed25519 Signed PDF/HTML Binder |
| Licensing Cost | High engineer labor hours | \$1,200+ / socket / year | From \$49 / host / month |
Runs directly on your Proxmox VE hypervisor (Debian 12 Bookworm base). Zero external dependencies.
Installs both certistack CLI and certistackd.service systemd daemon.
CertiStack is an autonomous diagnostic and verification instrument. It operates strictly on read-only loopback devices with volatile copy-on-write delta overlays, ensuring zero data alteration of backup repositories. All generated audit certificates are digitally signed via Ed25519 cryptography and canonical JSON (RFC 8785), establishing tamper-evident proof of recovery due diligence under NIST 800-34, CIS Controls, DORA, and SOC 2 CC7.4.