RAID-6 Capacity Calculator

Calculate RAID-6 usable capacity: (N-2) × drive_size. Two parity blocks (P and Q) enable survival of any 2 simultaneous drive failures. Minimum 4 drives required.

Networking
Algorithms
Binary & Number
Systems
Dev Metrics

IP Subnet Calculator

IP Address
CIDR Prefix
/
Network
192.168.1.0
Broadcast
192.168.1.255
Subnet Mask
255.255.255.0
First Host
192.168.1.1
Last Host
192.168.1.254
Usable Hosts
254
Binary breakdown:
IP: 11000000.10101000.00000001.00000000
Mask: 11111111.11111111.11111111.00000000
Net: 11000000.10101000.00000001.00000000
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How to Use

Enter the values for the scenario you are assessing. Calculate RAID-6 usable capacity: (N-2) × drive_size. Two parity blocks (P and Q) enable survival of any 2 simultaneous drive failures. Minimum 4 drives required. Use the raid-6 capacity result to inform your calculation.

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Frequently Asked Questions