
R
RAID
redundant array of inexpensive disks
RAID group
A set of RAID disks that have the same capacity and are treated as one group for data storage and
recovery. A RAID group contains both user data and parity information. This allows user data to be
accessed in the event that one or more of the drives within the RAID group are not available. The
RAID level of a RAID group determines the number of data drives and parity drives and how the data
is "striped" across the drives. For RAID1, user data is duplicated within the RAID group, so there is no
parity data for RAID1 RAID groups.
A RAID group can also be called an array group or a parity group.
RAID level
The type of RAID implementation. RAID levels include RAID0, RAID1, RAID2, RAID3, RAID4, RAID5 and
RAID6.
RCU
See remote control unit.
RCU target port
A
fibre-channel
port that is
configured
to receive remote I/Os from an initiator port on another
storage system.
remote control unit (RCU)
A storage system at a secondary or remote site that is
configured
to receive remote I/Os from one or
more storage systems at the primary or main site.
remote copy
See remote replication.
resync
resynchronize.
RMI
Remote Method Invocation
S
S-VOL
See secondary volume or source volume. When used for "secondary volume", "S-VOL" is only seen in
the earlier version of the Device Manager - Storage Navigator GUI (still in use).
SAS
serial-attached SCSI
secondary volume (S-VOL)
The volume in a copy pair that is the copy of the original data on the primary volume (P-VOL). The
following Hitachi products use the term "secondary volume": Thin Image, Copy-on-Write Snapshot,
ShadowImage, TrueCopy, Universal Replicator, Universal Replicator for Mainframe, and High
Availability Manager.
See also primary volume.
Glossary
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
357
Содержание Virtual Storage Platform F400
Страница 18: ......
Страница 30: ...Chapter 1 System administration overview System Administrator Guide for VSP Gx00 models and VSP Fx00 models 30 ...
Страница 202: ...Chapter 8 Configuring audit logs System Administrator Guide for VSP Gx00 models and VSP Fx00 models 202 ...
Страница 362: ...Glossary System Administrator Guide for VSP Gx00 models and VSP Fx00 models 362 ...
Страница 367: ......