Intel Application Accelerator User's Manual

Glossary

RAID Redundant Array of Independent Disks

RAID 0 Data striping Array. RAID 0 stripes the data across all the drives but doesn’t

utilize parity. This RAID level is designed for speed and is the fastest of the

RAID levels but provides the least protection.

RAID 1 Mirrored Disk Array. RAID 1 requires that each primary data disk have a

mirrored disk. The contents of the primary disk and the mirror disk are

identical. RAID 1 provides the best data protection but is slower than RAID

level 0. Note: Intel Application Accelerator version 3.0 does not support RAID

RAID Array A group of physical disk drives managed by either hardware, software, or a

combination of both

RAID Ready Term used to describe a system that an end-user can turn into a RAID system

by simply adding a second Serial ATA hard drive and invoking the migration

feature

RAID Volume A block of capacity, allocated from a RAID Array and arranged into a RAID

topology. The operating system sees a RAID Volume as a physical disk.

SCSI Small Computer System Interface

Serial ATA (SATA) New storage interface designed to replace parallel ATA (e.g. IDE technology).

SATA was designed for a variety reasons, including performance headroom,

cabling issues, and voltage tolerance requirements.

Strip Grouping of data on a single physical disk within a RAID Volume

Stripe The sum of all strips in a horizontal axis across physical disks within a RAID

Volume

Sustained transfer rate Rate at which the drive can transfer data sequentially from multiple tracks and

cylinders on the disk (closer to real-world file transfers)

Theoretical transfer rate Actual speed that the drive can read bits from the surface of the platter or

write bits to the surface of the platter (can be used to compare drives against

one another)

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