Hitachi AMS2100 User Manual page 199

measure determines up to what point in time data should be recovered.
Data changes preceding the disaster are preserved by recovery.
Recovery Time Objective (RTO)
The maximum desired time period allowed to bring one or more
applications, and associated data back to a correct operational state. It
defines the time frame within which specific business operations or data
must be restored to avoid any business disruption.
remote or target site
Maintains mirrored data from the primary site.
remote path
A route connecting identical ports on the local storage system and the
remote storage system. Two remote paths must be set up for each
storage system (one path for each of the two controllers built in the
storage system).
remote volume stem
In TrueCopy operations, the remote volume (R-VOL) is a volume
located in a different subsystem from the primary host subsystem.
resynchronization
Refers to the data copy operations performed between two volumes in
a pair to bring the volumes back into synchronization. The volumes in a
pair are synchronized when the data on the primary and secondary
volumes is identical.
RPO
See Recovery Point Objective.
RTO
See Recovery Time Objective.
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
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