Usable capacity
Parity and mirroring reduce usable capacity in exchange for resilience.
RAID Calculator
Calculate usable storage and disk-failure tolerance for RAID 0, 1, 5, 6 and 10 arrays.
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● ● ●RAID-CALCULATOR_TOOL● LIVE
Run RAID CalculatorEnter your requirements below. We will calculate the result instantly and show the closest relevant HostGraber option when available.
RESULTYour result
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ALTERNATIVESWant more headroom?
UNDERSTAND THE TOOL
What is RAID Calculator?
RAID changes usable capacity, resilience and performance characteristics depending on disk count and array level.
RAID is not a backup. Keep independent backups even when the array can tolerate disk failures.
READ THE OUTPUT
How to understand your results
Three signals that matter most when interpreting this tool.
Failure tolerance
Different RAID levels survive different numbers and patterns of disk failures.
Backups still required
RAID cannot protect against deletion, corruption, ransomware or site-level failure.
HOSTGRABER EXPERT GUIDE
Plan infrastructure with measurable inputs
RAID changes usable capacity, resilience and performance characteristics depending on disk count and array level. The result is intended to provide a clear planning baseline rather than replace workload testing, monitoring or vendor-specific requirements.
RAID is not a backup. Keep independent backups even when the array can tolerate disk failures. For production deployments, keep capacity headroom and verify the recommendation against real usage before committing critical workloads.
PRACTICAL GUIDE
Getting a reliable answer from this tool
Infrastructure planning should balance usable capacity, resilience and performance rather than optimizing only one number. CPU overcommit, RAID level, retention policy and SLA targets all affect how much safe headroom a production environment needs.
Treat calculator output as a design baseline. Leave room for maintenance, failover, rebuilds and growth, and keep independent backups for data that cannot be recreated.
GO FROM DIAGNOSIS TO SOLUTION
Build it better with HostGraber
Found a configuration problem or planning your next deployment? These HostGraber services are the most relevant next steps for this tool.
THREE SIMPLE STEPS
Use RAID Calculator in seconds
01
Enter the details
Provide the domain, IP address, workload, server specification or calculator inputs requested by the tool.
02
Run the check
HostGraber validates the input and processes the request using the appropriate DNS, network, SSL or calculation logic.
03
Act on the result
Review the output, copy it when needed, compare related checks and use the linked HostGraber resources for the next step.
COMMON QUESTIONS
RAID Calculator FAQ
Clear answers for common raid calculator questions.
Which RAID level gives the most capacity?+
RAID 0 uses all raw capacity but provides no redundancy.
Is RAID 5 safe for every workload?+
No. Drive size, rebuild time and workload matter; RAID 6 or RAID 10 may be preferable for some systems.
Does RAID replace backups?+
No. Keep independent, tested backups.
FROM TOOL TO INFRASTRUCTURE
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