Calculate storage capacity, performance, and fault tolerance for RAID configurations

Disk Setup

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Configure Your RAID Array

Enter disk size and number of disks to see available RAID configurations

About This Calculator

This RAID calculator helps you plan storage arrays by comparing different RAID levels based on your disk configuration. Simply enter your disk specifications to see available options with their capacity, performance, and reliability characteristics.

The calculator supports both traditional RAID levels (0, 1, 5, 6, 10, 50, 60) and ZFS configurations (RAIDZ1, RAIDZ2, RAIDZ3). Use Basic Mode for quick calculations with uniform disks, or Advanced Mode for mixed configurations with cost analysis.

This calculator provides estimates only. Actual RAID performance depends on hardware specifications and configuration. Always verify with a qualified professional.

RAID Level Specifications

RAID Level Type Min. Disks Capacity Redundancy Description
RAID 0
Striping 2+ 100% None Maximum speed and capacity. Data loss if any disk fails.
RAID 1
Mirroring 2+ 1 disk N-1 disks Complete duplication. Can lose all but one disk.
RAID 5
Distributed Parity 3+ N-1 1 disk Balanced storage. Best for drives under 4TB.
RAID 6
Double Parity 4+ N-2 2 disks Enhanced protection for large drives over 4TB.
RAID 10
Mirror + Stripe 4+ even 50% N/2 disks Excellent performance with redundancy. Ideal for databases.
RAID 50
Striped RAID 5 6+ Variable 1 per group Multiple RAID 5 groups. Better for large arrays.
RAID 60
Striped RAID 6 8+ Variable 2 per group Enterprise protection with performance.
RAIDZ1 ZFS
ZFS Single Parity 3+ N-1 1 disk ZFS with self-healing and checksums.
RAIDZ2 ZFS
ZFS Double Parity 4+ N-2 2 disks Enhanced ZFS protection with error correction.
RAIDZ3 ZFS
ZFS Triple Parity 5+ N-3 3 disks Maximum ZFS protection for critical data.
JBOD
Just a Bunch Of Disks 2+ 100% None Simple concatenation. No performance gain.
RAID 0
Min. Disks 2+
Capacity 100%
Type Striping
Redundancy None
Maximum speed and capacity. Data loss if any disk fails.
RAID 1
Min. Disks 2+
Capacity 1 disk
Type Mirroring
Redundancy N-1 disks
Complete duplication. Can lose all but one disk.
RAID 5
Min. Disks 3+
Capacity N-1
Type Distributed Parity
Redundancy 1 disk
Balanced storage. Best for drives under 4TB.
RAID 6
Min. Disks 4+
Capacity N-2
Type Double Parity
Redundancy 2 disks
Enhanced protection for large drives over 4TB.
RAID 10
Min. Disks 4+ even
Capacity 50%
Type Mirror + Stripe
Redundancy N/2 disks
Excellent performance with redundancy. Ideal for databases.
RAID 50
Min. Disks 6+
Capacity Variable
Type Striped RAID 5
Redundancy 1 per group
Multiple RAID 5 groups. Better for large arrays.
RAID 60
Min. Disks 8+
Capacity Variable
Type Striped RAID 6
Redundancy 2 per group
Enterprise protection with performance.
RAIDZ1 ZFS
Min. Disks 3+
Capacity N-1
Type ZFS Single Parity
Redundancy 1 disk
ZFS with self-healing and checksums.
RAIDZ2 ZFS
Min. Disks 4+
Capacity N-2
Type ZFS Double Parity
Redundancy 2 disks
Enhanced ZFS protection with error correction.
RAIDZ3 ZFS
Min. Disks 5+
Capacity N-3
Type ZFS Triple Parity
Redundancy 3 disks
Maximum ZFS protection for critical data.
JBOD
Min. Disks 2+
Capacity 100%
Type Concatenation
Redundancy None
Simple concatenation. No performance gain.