Storage Calculators

20 free storage calculators in Linux.

Disk IOPS CalculatorCalculate achievable disk IOPS from rotational speed, seek time and queue depth.
Disk Queue Length CalculatorCalculate average disk queue length from IOPS and service time using queuing theory.
Disk Throughput CalculatorCalculate sequential read/write throughput in MB/s from block size and IOPS.
Filesystem Cache CalculatorEstimate page cache size needed to cache a working set of files in RAM.
HDD Failure Probability CalculatorEstimate annual hard drive failure probability from AFR and fleet size.
LVM LV Size CalculatorCalculate logical volume size allocation from available volume group extents.
LVM PV Size CalculatorCalculate LVM physical volume size and metadata overhead for a given block device.
LVM Snapshot Size CalculatorSize an LVM snapshot volume based on expected change rate and snapshot lifetime.
LVM VG Capacity CalculatorCalculate total volume group capacity from combined physical volume extents.
NAS Capacity CalculatorCalculate usable NAS capacity after RAID redundancy and filesystem overhead.
RAID 0 Capacity CalculatorCalculate total usable capacity and performance of a RAID 0 striped array.
RAID 1 Capacity CalculatorCalculate usable capacity of a RAID 1 mirrored array from disk count and size.
RAID 10 Capacity CalculatorCalculate usable capacity of a RAID 10 striped-mirror array from disk count and size.
RAID 5 Capacity CalculatorCalculate usable capacity of a RAID 5 array accounting for single-disk parity.
RAID 6 Capacity CalculatorCalculate usable capacity of a RAID 6 array accounting for dual-disk parity.
RAID Performance CalculatorEstimate combined read and write IOPS across a RAID array based on level and disk count.
SAN Capacity CalculatorCalculate usable SAN capacity after RAID overhead, thin provisioning and reserved space.
SSD Lifetime CalculatorEstimate SSD lifespan from TBW rating, drive capacity and daily write volume.
Storage Expansion CalculatorCalculate additional disks or capacity needed to reach a target storage size.
Storage Growth ForecastForecast future storage needs from historical growth rate and planning horizon.