| Text: | The CHALLENGE RAID storage system provides a compact, high-capacity, high-availability source of disk storage for the CHALLENGE S, CHALLENGE DM, CHALLENGE L, and CHALLENGE XL servers. The CHALLENGE RAID storage system offers a large capacity of high-availability disk storage in as many as 20 disk modules. For even more storage, the CHALLENGE RAID rack storage system offers up to four RAID chassis assemblies, each with as many as 20 disk modules. The disk modules are grouped into RAID-5 units of five disks each, which can be connected to one or two SCSI buses on CHALLENGE servers separately or in combination. In addition, a basic CHALLENGE RAID storage system provides storage-system caching. This guide gives background in configurations and instructions on configuring and maintaining the CHALLENGE RAID storage system. |