Hitachi AMS 2100 Hardware Manual page 298

N
NIC
Network Interface Card. An expansion board in a computer that allows
the computer to connect to a network.
R
RAID
Redundant Array of Independent Disks. A disk array in which part of
the physical storage capacity is used to store redundant information
about user data stored on the remainder of the storage capacity. The
redundant information enables regeneration of user data in the event
that one of the array's member disks or the access path to it fails.
SNIA.
RAID 6
An extension of the RAID 5 array, that allows for two simultaneous
drive failures without downtime or data loss.recovery point objective
(RPO).
After a recovery operation, the recovery point objective (RPO) is the
maximum desired time period, prior to a disaster, in which changes to
data may be lost. This measure determines up to what point in time
data should be recovered. Data changes preceding the disaster are
preserved by recovery.
S
SAN
Storage Area Network. A network of shared storage devices that
contain disks for storing data.
SAS
Serial Attached SCSI. An evolution of parallel SCSI into a point-to-point
serial peripheral interface in which controllers are linked directly to disk
drives. SAS delivers improved performance over traditional SCSI
because SAS enables up to 128 devices of different sizes and types to
be connected simultaneously.
SATA
Serial ATA is a computer bus technology primarily designed for the
transfer of data to and from hard disks and optical drives. SATA is the
evolution of the legacy Advanced Technology Attachment (ATA)
interface from a parallel bus to serial connection architecture.
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Glossary–6
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Hitachi AMS 2100/2300 Storage System Hardware Guide
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