RAID Calculator Tool

Optimize Your Storage Strategy with Precision

As you plan your next system build, use the Velasea RAID calculator tool to provide an estimate of the storage requirements for your next Velasea system. Whether your deployment is large or small, our team of engineers can optimize the system design to meet your desired performance specifications.

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Drive Type Drive Size TB Total Drives Hot Spares RAID Level Required Usable TB Required Sequential Write MB/s Required IOPS RAID Groups Read/Write Workload Controller Efficiency % Controller Cache GB Write Cache Policy Effective Read Cache Hit % Stripe Size Reference Random IO Size Burst Window Read IOPS/drive Write IOPS/drive Read MB/s/drive Write MB/s/drive

Metric	Value

Theoretical RAID capacity math is deterministic for equal-size drives before controller metadata, formatting, filesystem, and application overhead. Single disks/JBOD have no RAID fault tolerance, and performance totals assume the workload is spread across all active disks. IOPS, throughput, cache, and rebuild values are planning estimates because real results vary by controller, firmware, drive model, queue depth, workload, rebuild throttle, and cache policy. Cache is modeled as effective read-hit and assumed dirty write-cache burst help; sustained sequential writes are still limited by drive type and the selected RAID layout.