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Table 30 Continuous Access Synchronous and Business Copy pair status (continued)

SecondaryPrimaryBusiness Copy Pair StatusContinuous Access Synchronous Pair

Status

R enabledR/W enabled

if no error

In paired state, but updates to the S-VOL

volume data are suspended due to an

In paired state, but updates to the S-VOL

data are suspended due to an error

PSUE

(error)

or PFUS occurs in the

primary volume

error condition. When a PSUE pair is

resynchronized, the RAID storage system

condition. (PSUE is PSUS with reason of

internal error. PFUS is PSUS with reason

of sidefile full.) copies the entire P-VOL to the S-VOL

(same as initial copy).

R enabledR/W enabled

if no error

Not used for Business CopyUsed for Continuous Access Synchronous

LUSE pairs only. In paired state, but

PDUB

occurs in the

primary volume

updates to one or more LDEVs within the

LUSE pair are suspended due to error

condition.

Table 31 Continuous Access Journal pair status

SecondaryPrimaryContinuous Access Journal Pair StatusStatus

R/W enabledR/W enabledUnpaired volumeSMPL

R enabledR/W enabledThe pair is synchronized. Updates to the P-VOL are duplicated on

the S-VOL.

PAIR

R enabledR/W enabledIn paired state, but initial copy, pairsplit, or resync operation is not

complete. Includes COPY(PD), COPY(SP), and COPY(RS) status.

COPY

R/W enabled when

using write enable

pairsplit option

R/W enabledThe user has split the pair or released the pair; the pair is no longer

synchronized.

PSUS

(split)

SSUS

(split)

• The primary and secondary systems keep track of journal data

discarded during the pairsplit operation.

• When the operation is performed at the primary system, the status

of both the P-VOL and S-VOL changes to PSUS.

• When the operation is performed at the secondary system, the

status of the S-VOL changes to PSUS; the primary system detects

this (if path status is normal) and changes P-VOL status to PSUS.

• When a pair is released from the secondary system, the secondary

system changes the status of the S-VOL to SMPL. The primary

system detects this (if path status is normal and changes P-VOL

status to PSUS. (The pair must be released from the primary system

to change P-VOL status to SMPL.)

R enabledR/W enabled if no

error occurs in the

primary volume

The pair is suspended due to an error; the pair is not synchronized.PSUE

• The primary and secondary systems keep track of any journal

data that are discarded during the suspension operation.

• The primary system keeps track of P-VOL tracks that are updated

while the pair is suspended.

• When a Cnt Ac-J suspension condition is detected, the primary

system changes P-VOL and S-VOL status to PSUE. If the secondary

system detects the condition, it changes the S-VOL status to PSUE;

the primary system detects this and changes P-VOL status to PSUS.

Read Only, unless write

option is enabled.

R/W enabledIf the Data Overflow Watch period is exceeded, pair status changes

from PFUL to PFUS, and the pair is suspended.

PFUS

• The PFUS status is displayed by RAID Manager and Remote Web

Console as PSUS.

• If a virtual volume of Thin Provisioning (THP-VOL) is used as a Cnt

Ac-J S-VOL, and the capacity of a pool-VOL is nearly full, Cnt Ac-J

status becomes PFUS and the pair is suspended.

Continuous Access Synchronous, Business Copy, and Continuous Access Journal operations 157

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