Intel Application Accelerator, User Manual

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Glossary
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Appendix D Glossary
48-bit LBA Technology used with hard drives larger than 137GB
AHCI Advanced Host Controller Interface (AHCI) is an interface specification that
allows the storage driver to enable advanced Serial ATA features such as
Native Command Queuing and hot plug.
Array Roaming Ability to move a complete RAID array from one computer system to another
computer system and preserve the RAID configuration information and data
on that RAID array.
BIOS Basic Input/Output System
Block size Same term as ‘Strip size’: Grouping of data on a single physical disk within a
RAID Volume
Burst transfer rate Maximum burst rate of the drive. These short transfers usually account for a
small percentage of total transfer requests, mostly from the integrated
controller cache or buffer.
Create From Existing Disk Feature in the Intel Application Accelerator which allows flexibility to upgrade
from a single Serial ATA (SATA) hard drive to a two drive RAID 0 or RAID 1
configuration when an additional SATA hard drive is added to the system
without loss of data.
Disks Physical disks attached to a RAID controller
IDE Integrated Drive Electronics
IDE to Serial ATA Adaptor Also referred to as “Serial ATA converter” or “device side dongle.” Connects
IDE hard drive to Serial ATA port
ICH5R Intel 82801ER I/O Controller Hub
ICH6R Intle 82801FR I/O Controller Hub
Intel Application Accelerator
RAID option ROM Standard PnP option ROM that provides a pre-operating system user interface
for the Intel RAID implementation. Also allows boot order to be selected from
within the BIOSes setup utility.
Matrix RAID Combines the benefits of RAID 0 performance and RAID 1 protection on two
hard drives
Native Hot Plug Feature supported by AHCI, allowing Serial ATA hard drive removal or
insertion while the system is powered on and running. For example, this may
be used when replacing a failed hard drive that is in an externally-accessible
drive enclosure.
NCQ Native Command Queuing (NCQ) is a feature supported by AHCI and it allows
for ATA drives to accept more than one command at a time. NCQ, when used
in conjunction with a hard drive that supports NCQ, increases storage
performance on random workloads by allowing the drive to internally optimize
the order of commands.
Port0 Serial ATA port (connector) on a motherboard identified as Port0
Port1 Serial ATA port (connector) on a motherboard identified as Port1
POST Power-On Self Test
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