Drobo 5D3 - Managing Capacity (Drive Space); Calculating Capacity to Use

Drobo 5D3 User Guide 81
7 Managing Capacity (Drive Space)
In order to protect your data from drive failure, your Drobo 5D3 requires more drive
space, or capacity, than what you will use for your data, sometimes as much as double
or more the amount of space.
You may need to calculate how much capacity you need for your Drobo device in order
to ensure your data is protected. You may also be ready to add or remove capacity, or
install or remove an mSATA SSD.
This section includes the following topics:
Calculating Capacity to Use
Adding Capacity (or Drives)
Removing Capacity (or Drives)
Inserting an mSATA SSD
Removing an mSATA Card
7.1 Calculating Capacity to Use
The best way to determine how much usable, protected storage space you will have
available for your data, based on the number and capacity of the drives you use in your
Drobo device, is to use our Capacity Calculator at www.drobo.com/calculator.
A shortcut to estimating the capacity available for your data is to omit the largest drive
and then add the capacity of the remaining drives. If you plan to use Dual Disk
Redundancy, omit the largest two drives. For example:
Single Disk (Default) Redundancy