Monitoring Transfer Server Health

Job monitoring tells you whether last night's transfer ran. Server health monitoring answers a different question: is the service itself well? Is it reachable and authenticating? Is it running out of disk, about to lose its certificate, or drowning in sessions? A server can be perfectly healthy while a job fails, and a job can succeed on a server that will be dead by morning.

This series builds the health side. It covers what healthy means for a transfer server, and service liveness through synthetic logins and protocol checks. It covers the core metrics of disk, sessions, and queue depth, and certificate and key expiry treated as health signals. It also covers log growth and error rates, and a simple dashboard that puts it all on one screen. Our job monitoring series covers the other half; the two belong side by side.

Articles in This Series

• What Healthy Means for a Transfer Server
  The service versus the jobs, and the health dimensions - reachable, authenticating, disk, sessions, queue, certificates and keys, logs - each with the question it answers and the failure it predicts.
• Service Liveness: Synthetic Logins and Protocol Checks
  Probes per protocol, the canary account and what it may touch, check frequency, alerting on failure without alert storms, and the probe that also measures response time.
• Disk, Sessions, and Queue Depth: The Core Metrics
  What to collect and where it comes from, thresholds that mean something, trends versus spikes, and the relationships between metrics that reveal trouble early.
• Certificate and Key Expiry as Health Signals
  Certificate days-remaining, host key age, service-account password expiry, and partner key expiry - folded into the same health view so nothing expires by surprise.
• Log Growth and Log Health
  Error rates as a health signal, log volume growth as a risk, rotation and retention, and the disk exhaustion that logs cause when nobody is watching them.
• A Simple Transfer Server Health Dashboard
  One screen: liveness, disk, sessions, certificate days, error rate - built with light tooling, with each alert linked to the runbook that fixes it.

Explore More Topics

This series is part of the Sysax file transfer topic library. The library covers the protocols, security practices, automation techniques, and operational skills behind reliable file transfer. The library pairs well with the practical tools we build. Sysax Multi Server is a secure FTP, FTPS, SFTP, and HTTPS server for Windows. Sysax FTP Automation schedules and scripts secure transfers so the routine ones run themselves.