Raid Calculator

The RAID Storage Calculator helps users determine the total raw capacity, usable capacity, redundancy overhead, storage efficiency, and minimum disks required based on the selected RAID level, number of disks, and individual disk capacity.

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Guide to Using the RAID Storage Calculator

This RAID Storage Calculator allows users to determine the storage capacity, redundancy, and efficiency of various RAID configurations. Follow the steps below to maximize its features.

Step 1: Input Required Information

  1. Number of Disks: Enter the total number of disks you plan to use in your RAID setup. It must be a number between 2 and 24, inclusive. Ensure that the input is an integer, as fractional disks are not permissible.
  2. Individual Disk Capacity (GB): Specify the capacity of each disk in gigabytes (GB). The capacity can range from 1 to 20,000 GB. Ensure this value aligns with your disk specifications.
  3. RAID Level: Choose the desired RAID level for your configuration. Available options include RAID 0 (Striping), RAID 1 (Mirroring), RAID 5 (Striping with Parity), RAID 6 (Double Parity), and RAID 10 (Striping and Mirroring). Each level offers distinct benefits and trade-offs regarding speed, redundancy, and data safety.

Step 2: Understand the Output Metrics

  1. Total Raw Capacity: This value indicates the cumulative capacity of all disks in the RAID, calculated as the number of disks multiplied by the individual disk capacity. The result is presented in gigabytes (GB) with two decimal precision.
  2. Usable Capacity: Depending on the chosen RAID level, this reflects the actual storage capacity available for data. RAID 0 utilizes all capacity for data, while other levels allocate some capacity for redundancy or parity. Usable capacity is displayed in gigabytes (GB) with two decimal precision.
  3. Redundancy Overhead: This metric shows the storage space allocated to redundancy, calculated by subtracting usable capacity from total raw capacity. It helps users understand the trade-off between data safety and storage availability.
  4. Storage Efficiency: Presented as a percentage, this indicates how efficiently the RAID configuration uses the raw storage capacity for actual data storage. Higher efficiency figures signify less overhead and greater data storage capacity.
  5. Minimum Disks Required: This outlines the minimum number of disks necessary for each RAID level to function correctly, ensuring you meet the baseline requirements for the chosen configuration.

Conclusion

By thoroughly inputting the necessary details and understanding the calculator’s output, users can efficiently configure their RAID setup to meet specific needs related to performance, reliability, and storage capacity.