HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

OS/390 Operating System/390
P-site primary site
P-VOL See primary volume.
pair Two logical volumes in a replication relationship in which one volume contains original data to
be copied and the other volume contains the copy of the original data. The copy operations can
be synchronous or asynchronous, and the pair volumes can be located in the same storage system
(in-system replication) or in different storage systems (remote replication).
pair status Indicates the condition of a copy pair. A pair must have a specific status for specific operations.
When an operation completes, the status of the pair changes to the new status.
parity group See RAID group.
path failover The ability of a host to switch from using the primary path to a logical volume to the secondary
path to the volume when the primary path fails. Path failover ensures continuous host access to
the volume in the event the primary path fails.
See also alternate path and failback.
PG parity group. See RAID group.
physical device See device.
PiT point-in-time
point-in-time (PiT)
copy
A copy or snapshot of a volume or set of volumes at a specific point in time. A point-in-time copy
can be used for backup or mirroring application to run concurrently with the system.
pool A set of volumes that are reserved for storing Snapshot data or Thin Provisioning write data.
pool volume
(pool-VOL)
A logical volume that is reserved for storing snapshot data for Snapshot operations or write data
for Thin Provisioning.
port attribute Indicates the type of fibre-channel port: target, RCU target, or initiator.
port block A group of four fibre-channel ports that have the same port mode.
port mode The operational mode of a fibre-channel port. The three port modes for fibre-channel ports on the
HP RAID storage systems are standard, high-speed, and initiator/external MIX.
PPRC Peer-to-Peer Remote Copy
Preview list The list of requested operations on Remote Web Console.
primary site The physical location of the storage system that contains the original data to be replicated and
that is connected to one or more storage systems at the remote or secondary site through remote
copy connections. A primary site can also be called a “main site” or “local site”.
The term “primary site” is also used for host failover operations. In that case, the primary site is
the host computer where the production applications are running, and the secondary site is where
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,
BC Z, Cnt Ac-S, Continuous Access Journal, Continuous Access Journal Z, and External Storage
Access Manager.
See also secondary volume (S-VOL).
R-JNL restore journal
R-SIM remote service information message
R-site remote site (used for Continuous Access Journal)
R-VOL See remote or secondary volume.
R/W read/write
R/W, r/w read/write
RAID redundant array of inexpensive disks
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