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Prefail review

Freemium#9 of 30 in Disk Health Monitoring Software

A Linux-focused monitor with trend analysis, RAID coverage, and fleet alerts.

8.3/10Editor score
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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.

Prefail pros and cons

  • 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

Prefail fact sheet, pricing and score →

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