TYAN S3891, Руководство пользователя

Страница: 91 / 95

http://www.TYAN.com
91
RAID (Redundant Array of Independent Disks): a way for the same data to
be stored in different places on many hard drives. By using this method, the
data is stored redundantly, also the multiple hard drives will appear as a single
drive to the operating system. RAID level 0 is known as striping, where data is
striped (or overlapped) across multiple hard drives, but offers no fault-tolerance.
RAID level 1 is known as mirroring, which stores the data within at least two
hard drives, but does not stripe. RAID level 1 also allows for faster access time
and fault-tolerance, since either hard drive can be read at the same time. RAID
level 0+1 is both striping and mirroring, providing fault-tolerance, striping, and
faster access all at the same time.
RAIDIOS: stands for RAID I/O Steering, a type of RAID technology from Intel.
RAIDIOS is a specification used to enable an embedded I/O controller,
embedded on the motherboard, to be used as just an I/O controller or to be the
I/O component of a hardware RAID subsystem. The RAIDIOS circuit allows an
I/O Processor (either embedded on the motherboard or on an add-in card) to
configure the I/O controller and service the I/O controller’s interrupts. The I/O
controller and the I/O Processor together are two of the primary components of
a hardware RAID subsystem.
RAM (Random Access Memory): technically refers to a type of memory where
any byte can be accessed without touching the adjacent data, is often used to
refer to the system’s main memory. This memory is available to any program
running on the computer.
ROM (Read-Only Memory): a storage chip which contains the BIOS; the basic
instructions required to boot the computer and start up the operating system.
SATA (Serial ATA): is an evolutionary replacement for the Parallel ATA
physical storage interface. Serial ATA is a drop-in solution in that it is
compatible with today’s software and operating systems. It will provide for
systems which are easier to design, with cables that are simpler to route and
install, smaller cable connectors, and lower voltage requirements.
SDRAM (Synchronous Dynamic RAM): called as such because it can keep
two sets of memory addresses open simultaneously. By transferring data
alternately from one set of addresses and then the other, SDRAM cuts down on
the delays associated with non-synchronous RAM, which must close one
address bank before opening the next.
Serial port: called as such because it transmits the eight bits of a byte of data
along one wire, and receives data on another single wire (that is, the data is
transmitted in serial form, one bit after another).