Prefail
Prefail: A Linux-focused monitor with trend analysis, RAID coverage, and fleet alerts. Ranked #9 of 30 in Disk Health Monitoring Software by our editors (8.3/10); pricing: Free plan; best for linux fleets needing trend-based alerts.
At a glance
- Editor score8.3 / 10
- PricingFree plan
- Best forLinux fleets needing trend-based alerts
- Free planYes
- Paid from$9/mo
- SMART monitoringYes
- Facts checked23 Sep 2026
Where it wins
- Weighted SMART scoring with degradation trends and score history
- Monitors MegaRAID, Adaptec SmartRAID, and Linux mdadm
- Telegram Mini App dashboard with alerts, acknowledgements, and exports
Where it doesn't
- Platform support is limited to Linux
- The Free plan covers up to 2 servers and 7-day score history
- Pro costs $9 per account monthly for up to 20 servers
Our verdict on Prefail
Prefail is a Linux disk health monitoring service for infrastructure operators managing individual servers or server fleets. It reads SMART data, analyzes more than 25 SMART attributes, assigns weighted disk risk scores, and tracks degradation through score history and degradation velocity. The product supports SSD wear tracking, failure prediction, remote monitoring, raw SMART counter display, and monitoring for disks behind MegaRAID, Adaptec SmartRAID, and Linux mdadm controllers. Alerts are delivered through Telegram, with email fallback.
The plan structure scales by server count. Free costs $0 per account monthly and includes up to 2 servers, a 30–60 minute pulse, 7-day score history, Telegram alerts, and email alerts for 1 recipient. Pro costs $9 per account per month for up to 20 servers, a 5–30 minute pulse, 90-day score history, and weekly PDF digests. Business costs $39 monthly for up to 75 servers and 180-day history. Scale costs $149 monthly for up to 250 servers, 1–30 minute pulses, 365-day history, and priority support. Enterprise includes unlimited servers, a 1-minute pulse, unlimited score history, SLA, SSO, and an audit log.
Prefail’s strongest fit is Linux operations work where trend-based alerting matters more than a broad platform ecosystem. Its Telegram Mini App fleet dashboard, alert acknowledgement and mute controls, per-disk notes, JSON export, and paid weekly PDF reports support ongoing review across monitored infrastructure. Telegram and email are the listed integrations, so teams seeking wider integrations may find the ecosystem narrow. The Free plan suits small deployments and evaluation, while larger fleets gain faster pulses, longer history, and broader account capacity through paid tiers. Choose Prefail for Linux fleets needing SMART-based risk tracking and RAID-aware monitoring; consider alternatives when multi-platform support or a wider integration set is essential.
Your product? Our editors can test Prefail in depth and publish a review, labelled as paid · from $149/mo →
Prefail pricing
All 5 Prefail plans and prices →
Prefail fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $9/mo |
| SMART monitoring | Yes |
| SSD wear tracking | Not verified |
| Temperature alerts | Not verified |
| Failure warnings | Yes |
| Remote monitoring | Yes |
| Drives on cheapest plan | Not verified |
| Supported platforms | Linux |
| Deployment | Cloud, Self-hosted, Mobile |
| Platforms | Linux |
| Compliance & security | SSO/SAML, 2FA |
| Support | |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | prefail.io |
| Facts checked | 23 Sep 2026 |
Alternatives to Prefail
- Hard Disk SentinelA full-featured Windows and Linux monitor with diagnostics, alerts, backups, and remote management.9.4
- smartmontoolsBroad, free disk-health monitoring for technical users comfortable with command-line tools.9.2
- DA Drive AnalyzerA low-cost, cross-platform drive monitor with AI predictions and NAS coverage.9.0
See all Prefail alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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