VPS Uptime: What 99.9% vs 99.99% Means for Traders
“99.9% uptime” sounds almost identical to “99.99% uptime”. In practice they are wildly different for a trader whose EA is depending on that server. One extra nine on the percentage figure is worth roughly ten times more reliability. This article explains what those numbers really mean in minutes of downtime, why the difference matters for automated trading, and how to check whether a provider actually delivers what their SLA claims, because the number on the marketing page is not the same as the number you experience.
The Numbers Behind the Percentages
Uptime SLAs sound abstract until you translate them into real downtime allowances. The table below shows the maximum permitted downtime for each tier over a month and a year.
Uptime SLA | Downtime per month | Downtime per year |
|---|---|---|
99% | ~7h 18m | ~3d 15h |
99.5% | ~3h 39m | ~1d 19h |
99.9% | ~43m 28s | ~8h 45m |
99.95% | ~21m 44s | ~4h 22m |
99.99% | ~4m 23s | ~52m 35s |
99.999% | ~26 seconds | ~5m 15s |
A 99.9% monthly uptime allowance equals roughly 43 minutes of downtime per month. A 99.99% allowance equals about 4 minutes and 23 seconds. That is a ten-fold difference in acceptable outage time, and it directly maps to how much market exposure your EA might miss during a busy month.
Why This Matters More Than It Looks
Downtime is rarely spread evenly. A provider can hit 99.9% overall while dropping offline for 40 continuous minutes during a Non-Farm Payrolls release. If your EA had a position open, no trailing stop was managed for those 40 minutes. If your EA was flat, no signal was taken. Either outcome could be materially different from a well-executed trade plan.
For automation, the shape of downtime matters as much as the total. A steady 99.99% is usually preferable to a “typically 99.99% but occasionally goes dark for 30 minutes” pattern, because rare long outages tend to correlate with high-volatility moments when the impact is largest.
Planned vs Unplanned Downtime
Most SLAs exclude planned maintenance from their uptime calculation. That means the advertised figure only covers unexpected outages. A provider might legitimately advertise 99.99% while still scheduling 2 hours of maintenance per month.
When comparing providers, ask:
Is planned maintenance included in the SLA?
When is planned maintenance performed (weekends only, or during trading hours)?
Is there notice, and how far in advance?
What is the historical average of planned maintenance minutes per month?
MetaQuotes provides its own virtual hosting service with published availability targets, which is a useful reference when evaluating third parties. Our free Broker and VPS Quick Reference sets out these questions alongside the specification and cost checks, so you can run a provider through all of them in one go.
What “Uptime” Actually Measures
A subtle point: uptime is usually measured at the server power level, not at the application level. Your VPS can be “up” while MetaTrader itself has crashed, frozen, or lost broker connection.
True effective uptime for automated trading is a combination of:
Server power on
Windows responsive
MetaTrader running
Broker connection alive
EA attached and not in error state
Historical price data intact and synced
Providers only guarantee the first two. The rest is on you, which is why external monitoring that pings MetaTrader itself, not just the server, is worth setting up.
How to Verify a Provider’s Real Uptime
Marketing pages will always advertise the biggest number. Independent verification is more useful.
Check third-party status pages and monitoring sites.
Look for public incident histories rather than just an SLA number.
Ask for SLA credit terms; a provider that gives meaningful credits is confident in their infrastructure.
Test yourself. Use a monitoring service that pings your VPS every minute for a month.
Review the provider’s uptime reports for the last 12 months rather than just the last quarter.
Providers we vet, including QuantVPS, ForexVPS.net, TradingFXVPS, and FXVM, publish varying levels of transparency. Our vetted VPS overview explains how to interpret those claims.
Practical Consequences for Different EA Types
Scalping EA: Even 4 minutes of downtime during London open can affect dozens of trades. 99.99% is worth paying for.
Grid or martingale EA: Missing a management tick when a basket is deep in drawdown can be dangerous. Higher uptime helps.
Swing EA on H4/D1: A few minutes of downtime is usually negligible. 99.9% is often sufficient.
Copy trading follower: You want uptime aligned with the provider’s trade frequency. High-frequency followers need 99.99%.
News-event EA: Uptime during the specific event windows matters more than average uptime.
Redundancy Beyond the SLA
Uptime is only one layer of resilience. Serious setups also consider:
A secondary VPS in a different data centre as a warm standby.
Broker-side stop losses that survive VPS outages.
Monitoring alerts to your phone when the VPS or EA goes offline.
Automated MetaTrader restart on Windows service failure.
Regular snapshot backups of the VPS state.
Because a stop loss placed at the broker persists regardless of your VPS state, it is the single most important layer of protection.
FAQ
Is 100% uptime possible?
No. Any provider claiming 100% is misleading. Even the largest cloud providers commit to 99.99% or 99.999% at best.
How much downtime is acceptable for a live trading account?
There is no universal answer, but most serious automated traders target 99.95% or higher.
Does a higher SLA cost more?
Usually yes. Redundant power, network, and hardware are expensive to build.
Can I claim compensation for downtime?
Only up to the SLA credit terms, which are usually capped at a percentage of the monthly fee, not trading losses.
Should I trust an uptime claim without evidence?
No. Always look for a public status page or an independent monitoring track record.
Does MetaTrader need to be restarted after a VPS reboot?
Usually yes, unless auto-start scripts are configured. Confirm your VPS provider supports terminal auto-launch on boot.
Trading foreign exchange and CFDs on margin carries a high level of risk and may not be suitable for all investors. This article is for educational purposes only and does not constitute financial advice.
See VPS Providers That Publish Real Uptime Data
Uptime is only useful when it is transparent and verifiable. Explore our independently reviewed MT4 and MT5 VPS providers to compare SLAs, status pages, and incident histories before committing.
