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Home >> Calculators >> Storage Configuration Utility

This tool is designed to allow you to determine the proper configuration of hard disks to install in the freeStor 4020 to best suit your storage needs.

1. How much storage space do you require?
Note: This is not equal to the total amount of storage space in the NAS, as RAID uses up a portion of the disk space.

160 GB	1 TB
250 GB	1.5 TB
400 GB	2.0 TB
500 GB	3.0 TB
750 GB

If you do not know how much storage space you need, click here to take the Storage Survey.

2. How much redundancy do you require?
Redundancy allows the unit to keep functioning in the event of a hard drive failure.

	No Redundancy: Data is not important and losing it will not affect the business at all. (Not Recommended)
	Basic Redundancy: Data is important and reasonable measures should be taken to protect it. (Recommended)
	High Redundancy: Data is business critical and must be available online at all times.
	Do Not Know: Selecting this option will display all available options.

RAID Overhead Table

RAID Type	# Drives	Useable Space
JBOD (No RAID)	1-4	100%
RAID 0	2-4	100%
RAID 1	2	50%
RAID 1	3	33%
RAID 1	4	25%
RAID 5	3	67%
RAID 5	4	75%
RAID 5 + Hot Spare	4	50%
RAID 10	4	50%

For a list of compatible hard drives, visit our FAQ here.

Note: This tool should only be used to obtain an estimate of your storage requirements.
Contact your local reseller to determine the appropriate configuration to meet your needs.