Hitachi MK-97DF8018-00 - Manual (Page 84)

Glossary–12
Hitachi Simple Modular Storage Copy-on-Write SnapShot User’s Guide
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
S
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.
secondary volume (S VOL)
A replica of the primary volume (P-VOL) at the time of a backup and is
kept on a standby storage system. Recurring differential data updates
are performed to keep the data in the S-VOL consistent with data in the
P-VOL.
SMPL
Simplex.
snapshot
A term used to denote a copy of the data and data-file organization on
a node in a disk file system. A snapshot is a replica of the data as it
existed at a particular point in time.
SNM2
See Storage Navigator Modular 2.
Storage Navigator Modular 2
A multi-featured scalable storage management application that is used
to configure and manage the storage functions of Hitachi arrays. Also
referred to as “Navigator 2”.
suspended status
Occurs when the update operation is suspended while maintaining the
pair status. During suspended status, the differential data control for
the updated data is performed in the primary volume.
S-VOL
See secondary volume.