User Manual

4. How to Use
User Guide Page 4-31
4.1.2.8.3 Expansion
Expansion adds spare disks or new hard drives to an existing array. This is no need to create a new array
or stop an array; you may add new disks online while the array is in use. Expansion can enlarge the
capacity and frequency of an array. Although you may still access the array while doing Expansion, its
performance is affected considerably. You may check the progress of Expansion in the main view.
Example:
Figure 72: Expainsion concept
Note
The storage capacity of a new hard drive must be no smaller than the other
disks in the array.
Note
The ExaSAN
RAID Controller allows you to create a maximum of 4 arrays
with 24 maximum drives in each array. This may limit the flexibility of the
Expansion feature.
Follow the steps below to select an array to expand.
1. Select the array to add additional drives to, and select the number of drives to be added. A “+” sign
appears above the drives to be added.
2. Check the Confirm box and click Expand Array.
Note
It is only the number of drives that can be chosen, not the specific drive.