Cache storage is normally transparent to the accessing device. Duplexing Mirroring across two RAID cards. The ability of a system to continue to perform its functions even when one or more hard disk drives have failed. Hot Spare A spare hard drive which will automatically be used to replace the failed member of a redundant disk array. The ability to remove a failed member of a redundant disk array and replace it with a good drive without bringing down the server or interrupting transactions that involve other devices.
Microprocessors offer higher performance compared to co-processors.
A process for adding storage capacity to an existing RAID array without having to take the server offline. Also known as Dynamic Array Expansion. Parity A form of data protection used by RAID level 5 to recreate the data of a failed drive in a disk array. RAID Levels Numbered 0 through 5, RAID levels refer to different array architectures that offer various advantages in terms of data availability, cost and performance. RAID Management Software Software that makes installation, configuration, and management of RAID arrays easy.