Areca ARC-1130, ARC-1110, ARC-1231ML/1261ML/1280ML, ARC-1120 manual Rebuild, Sata Serial ATA

GLOSSARY

speed, switched architecture. Each PCI Express link is a serial commu- nications channel made up of two differential wire pairs that provide

2.5Gbits/sec in each direction. Up to 32 channels may be combined, creating a parallel interface of independently controlled serial links.

PCI-X

(PCI extended) an enhanced PCI bus technology is backward compat- ible with existing PCI cards. PCI and PCI-X slots are physically the same. PCI cards run in PCI-X slots, and PCI-X cards run in PCI slots at the slower PCI rates. First introduced in 1999, PCI-X offered increased speed over PCI and has steadily increased to more than 30 times that of the original PCI bus.

RAID

(Redundant Array of Independent Disks) a disk subsystem that is used to increase performance or provide fault tolerance. RAID can also be set up to provide both functions at the same time. RAID is a set of two or more ordinary hard disks and a specialized disk controller that contains the RAID functionality. RAID has been developed initially for servers and stand-alone disk storage systems. RAID is important espe- cially when rebuilding data after a disk failure.

Rebuild

When a RAID array enters into a degraded mode, it is advisable to rebuild the array and return it to its original configuration (in terms of the number and state of working disks) to ensure against operation in degraded mode.

SATA (Serial ATA)

The evolution of the ATA (IDE) interface that changes the physical architecture from parallel to serial and from master-slave to point- to-point. Unlike parallel ATA interfaces that connect two drives; one configured as master, the other as slave, each Serial ATA drive is con- nected to its own interface. At initial introduction, Serial ATA (SATA) increases the transfer rate to 150 MB/sec (1.5Gb/s) and SATA2 to 300 MB/sec.

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