Table 2-4 urz data volume pair status – HP StorageWorks XP Remote Web Console Software User Manual

Page 57

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Chapter 2 About Universal Replicator Operations

2-35

Hitachi Universal Replicator for IBM /OS User’s Guide

Table 2-4

URz Data Volume Pair Status

Pair Status

Description

Simplex

This volume is not currently assigned to a URz data volume pair. This volume
does not belong in the journal group. When this volume is added to a URz data
volume pair, its status will change to pending duplex.

Pending Duplex

The initial copy operation for this pair is in progress. This data volume pair is not
yet synchronized. When the initial copy is complete, the status changes to
duplex.

Duplex

This data volume pair is synchronized. Updates to the primary data volume are
duplicated on the secondary data volume.

Suspended
(see Table 2-5 for
suspend types)

This data volume pair is not synchronized.

– When the primary storage system detects a URz suspension condition (see

section Suspension Condition), the primary storage system changes the primary

data volume status and secondary data volume status (if possible) to

suspended.

– When the secondary storage system detects a URz suspension condition (see

section Suspension Condition), the secondary storage system changes the

secondary data volume status to suspended.

– When you suspend a pair from the primary storage system, the primary storage

system changes the status of the primary data volume and secondary data

volume (if possible) to suspended. When you suspend a pair from the

secondary storage system, the secondary storage system changes the status of

the secondary data volume to suspended.

– When the primary storage system detects that the pair was suspended or

released from the secondary storage system, the primary storage system

changes the status of the primary data volume to suspended.

Suspending

This pair is not synchronized. This pair is in transition from duplex or pending
duplex
to suspended. When the suspension is requested (by user, primary
storage system, or secondary storage system), the status of all affected pairs
changes to suspending. When the suspension is complete, the status changes to
suspended.

Deleting
(releasing)

This pair is not synchronized. This pair is in transition from duplex, pending
duplex
, or suspended to simplex. When the delete pair operation is requested
(by user), the status of all affected pairs changes to deleting (releasing). When
the delete pair operation is complete, the status changes to simplex.

SEQCHK

The secondary storage system encountered a non-time-stamped journal data
for a URz pair using the System timer type option. This status can be displayed
at the primary storage system and secondary storage system, but the primary
storage system may not have the most current information. Always use the pair
status information displayed at the secondary storage system for disaster
recovery.

Hold

The pair is prepared for delta resync operation. When the status of primary data
volume is Hold, the write data for the TCz Synchronous R-VOL is stored in the
master journal volume.
Only the delta resync operation, releasing operation, or changing pair option
operation are allowed on the pairs in Hold status.

Hlde

An error occurred on the pair in Hold status. When the status of primary data
volume is Hlde, the write data for the TCz Synchronous S-VOL will not be stored
in the master journal volume.
Only recovering pair status to standby (Hold) operation, releasing operation, or
changing pair option operation are allowed on the pairs in Hlde status.

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