Determining Drive Space Requirements; Using Power Protection - Drobo 5C Getting Started Manual

1.4.3 Determining drive space requirements

In order to protect your data from drive failure, your Drobo 5C requires more space than what you
will use for your data. It may, sometimes, use as much as double or more the amount of space.
1.4.3.1 Capacity calculator
The best way to determine how much usable and protected storage space is available for your data,
based on the number and capacity of your drives, is to use our Capacity Calculator. To view the
Drobo Drive Capacity Calculator page, go to
calculator/.
A shortcut for 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, then omit the
largest two drives.
For example:
Single disk (default) redundancy
Dual disk redundancy
Notes:
- Actual capacity is often less than what is shown in the examples above due to the different systems
used for rating capacity. This has nothing to do with the Drobo 5C.
- Your Drobo 5C enables you to easily increase storage capacity at any time by simply inserting
additional drives or replacing smaller drives with larger ones.
- In the Drobo 5C device, 64TB space is available for storage.

1.4.4 Using power protection

We recommend you to use the following power protection with your Drobo 5C:
An uninterruptible power supply (UPS), which protects against sudden losses in power.

A power surge protector to protect against power surges.

Drobo 5C Getting Started Guide
http://www.drobo.com/storage-products/capacity-
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