Dell DCL and 3 Guide de l'utilisateur télécharger pdf (Page 239)

Glossary 237

Glossary

Array—A grouping of hard disk drives combines the storage space on the

hard drives into a single segment of contiguous storage space. The RAID

controller can group hard drives on one or more channels into an array. A

hot spare drive does not participate in an array.

Array Management Software—Software that provides common control and

management for a disk array. Array Management Software most often

executes in a disk controller or intelligent host bus adapter, but it can also

execute in a host computer. When it executes in a disk controller or adapter,

Array Management Software is often called firmware.

Array Spanning—Array spanning by a logical drive combines storage space

in two arrays of hard drives into a single, contiguous storage space in a

logical drive. The logical drive can span consecutively numbered arrays,

each having the same number of hard drives. Array spanning promotes

RAID level 1 to RAID level 10. See also Disk Spanning, and Spanning.

Asynchronous Operations—Operations that are not related to each other in

time and can overlap. The concept of asynchronous I/O operations is central

to independent access arrays in throughput-intensive applications.

ATA —(Advanced Technology Attachment) Also known at IDE (Integrated

Device Electronics), this is a type of hard disk drive interface in which the

controller electronics are integrated onto the drive itself. A separate adapter

card is no longer needed, which reduces interface costs and makes it easier

to implement firmware.

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Dell DCL and 3 Guide de l'utilisateur Page 239