# Understanding creating spanned arrays

When you group one or more arrays together and configure the ServeRAID controller to access them in a particular pattern, you create a spanned array.

Spanned arrays are used to create logical drives using as many as 60 physical drives. The ServeRAID controller supports RAID level-00, 10, 1E0, and 50.

Note: Spanned arrays are supported only by IBM ServeRAID-4 Ultra160 SCSI controllers.

## More information

- Creating spanned arrays in the wizard
- Understanding RAID level-x0
- Understanding when RAID level-x0 logical drives change state
- Understanding creating basic arrays
- Physical drive capacity and unusable capacity

Glossary | Index | Contents

x-1019-SRM-00-00-EN