content_image/1004162.jpg
## 6.3 Working with internal drives and arrays 

An array is a type of MDisk that is made up of disk drives (or flash drive modules); these drives are members of the array. A Redundant Array of Independent Disks (RAID) is a method of configuring member drives to create high availability and high-performance groups. The system supports nondistributed (traditional) and distributed array configurations. 

## 6.3.1 Working with drives 

This section describes how to manage internal storage disk drives and configure them to be used in arrays. 

## Listing disk drives 

The system provides an Internal Storage pane for managing all internal drives. To access the Internal Storage pane, click Pools →  Internal Storage , as shown in Figure 6-42. 

<img src='content_image/1004162.jpg'>

The pane gives an overview of the internal drives in the system. Selecting All Internal  in the drive class filter displays all drives that are managed in the system, including all I/O groups and expansion enclosures. 

Selecting All Internal  under the Drive Class Filter shows all the drives that are installed in the managed system, including attached expansion enclosures. Alternatively, you can filter the drives by their type or class. For example, you can choose to show only Enterprise drive class (serial-attached Small Computer System Interface (SCSI) or (SAS)), Nearline SAS, or Flash drives. Selecting the class of the drives on the left side of the pane filters the list and display only the drives of the selected class. 

You can find information regarding the capacity allocation of each drive class in the upper right corner, as shown in Figure 6-42: 

GLYPH<SM590000> MDisk Capacity shows the storage capacity of the selected drive class that is assigned to MDisks. 

GLYPH<SM590000> Spare Capacity shows the storage capacity of the selected drive class that is used for spare drives. 

GLYPH<SM590000> Total Capacity shows the overall capacity of the selected drive class. 

If All Internal  is selected under the drive class filter, the values shown refer to the entire internal storage. 

