Access control lists—Operating system–level security that governs read-write-execute-delete privileges of any file, folder, or program by any individual account or account group.

Advanced replacement—A service purchased with, or included with, hardware. If a hardware component fails, the hardware supplier will ship a replacement part in advance of receiving the failed part from the customer. Without advanced replacement, the failed part is shipped and received, then the replacement part is shipped, often resulting in several weeks of hardware-out-of-service.

Annual Failure Rate (AFR)—A reliability metric published by disk drive manufacturers. For an installed statistically valid sample of disk drives, the number of drives which will ...

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