as the smallest drive in the array. Any excess capacity of a particular drive cannot be used in the array and is unavailable for data storage.

•The more physical drives configured in an array, the greater the probability that the array will experience a drive failure during any given period.

•To guard against the data loss that occurs when a drive fails, configure all logical drives in an array with a suitable fault-tolerance (RAID) method. For more information, see "Drive arrays and fault-tolerance methods (on page 116)."

Minimum requirements

For minimum operating system requirements to run any HP SSA format, see the HP website (http://www.hp.com/go/ossupport).

Minimum video requirements to run the HP SSA GUI include a minimum monitor resolution of 1024x768 and

16-bit color. The GUI supports the following browsers:

•Mozilla Firefox 9.0 or later

•Microsoft Internet Explorer 8.0 or later

•Google Chrome

For a list of supported controllers, see HP Smart Array RAID Controllers on the HP website (http://www.hp.com/go/smartarray).

Native support for 64-bit and 32-bit operating systems

HP SSA now offers a native 64-bit HP SSA application for supported 64-bit operating systems, eliminating the need for compatibility libraries. A 32-bit HP SSA application is also available. Users can choose to install the application that matches the OS installed on the server product.

The 64-bit HP SSA application is not a direct upgrade from 32-bit HP SSA. On 64-bit systems running 32-bit HP SSA, you must uninstall the 32-bit application, and then install the 64-bit application.

Future versions of HP SSA will be available as native 32-bit or native 64-bit applications, as long as 32-bit operating systems are supported.

Overview 9