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HP XP P9500 Storage User Manual

Page 143

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the backup applications run when the applications at the primary site fail, or where the primary
site itself fails.

primary volume

The volume in a copy pair that contains the original data to be replicated. The data in the primary
volume is duplicated synchronously or asynchronously on the secondary pairs.

The following HP products use the term P-VOL: Remote Web Console, Snapshot, Business Copy,
Business Copy Z, Continuous Access Synchronous, Continuous Access Journal, Continuous Access
Journal Z, and External Storage Access Manager.

See also secondary volume (S-VOL).

R-VOL

See remote volume (R-VOL).

R/W

read/write

R/W, r/w

read/write

RAID

redundant array of inexpensive disks

RAID group

A redundant array of inexpensive drives (RAID) 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, which allows the 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).

RD

read

remote console PC

A previous term for the personal computer (PC) system that is LAN-connected to a RAID storage
system. The current term is Remote Web Console PC.

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.

remote copy
connections

The physical paths that connect a storage system at the primary site to a storage system at the
secondary site. Also called data path.

remote replication

Data replication configuration in which the storage system that contains the original data is at a
local site and the storage system that contains the copy of the original data is at a remote site.
Continuous Access Synchronous and Continuous Access Journal provide remote replication. See
also in-system replication.

remote site

See secondary site.

remote volume
(R-VOL)

In Continuous Access Synchronous Z, a volume at the remote site that contains a copy of the
original data on the main volume (M-VOL) at the main site.

resync

resynchronize

RWC

Remote Web Console

S#

serial number

S-VOL

See secondary volume or source volume (S-VOL). When used for "secondary volume", "S-VOL"
is only seen in the earlier version of the Remote Web Console GUI (still in use).

S/N

serial number

SAID

system adapter ID

SC

storage control

SCDS

source control dataset

SCI

state change interrupt

scripting

The use of command line scripts, or spreadsheets downloaded by Configuration File Loader, to
automate storage management operations.

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