HP StorageWorks XP Continuous Access User Guide: HP XP12000 Disk Array, HP XP10000 Disk Array, HP 200 Storage Virtualization System (T1711-96025, May 2011)

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A split (or suspended) XP Continuous Access Async S-VOL has an additional status called consistency

status. The consistency status is displayed only at the RCU and indicates the S-VOL's update

sequence consistency with respect to other S-VOLs in the same group.

Table 7 XP Continuous Access split types (PSUS)

DescriptionApplies toType

You split the pair from the MCU using the

P-VOL Failure option. S-VOL split type is

PSUS-by MCU.

P-VOL (XP Continuous

Access Sync only)

PSUS, P-VOL by

Operator

You split the pair from the MCU or RCU using

the S-VOL option.

P-VOL, S-VOLPSUS, S-VOL by

Operator

The RCU received a request from the MCU to

split the pair. P-VOL split type is PSUS-P-VOL

by Operator or PSUS-S-VOL by Operator.

S-VOLPSUS, by MCU

The MCU detected the S-VOL status changed

to SMPL because you deleted the pair

(pairsplit-S) from the RCU. The pair cannot be

resumed because the S-VOL does not have

the PSUS/PSUE status.

P-VOLPSUS, Delete pair to

RCU

Table 8 (page 27) describes the consistency status for split or suspended XP Continuous Access

Async S-VOLs (consistency status is displayed only at the RCU).

Table 8 Consistency status descriptions for split/suspended XP Continuous Access Async S-VOLs

DescriptionConsistency status

(displayed at RCU)

XP Continuous Access Asynchronous volume pair was probably

split or suspended alone. Update sequence consistency between

this S-VOL and other S-VOLs in this consistency group is not

ensured. This S-VOL cannot be used for disaster recovery at the

secondary site. This status is indicated when:

• You split this pair using the Suspend Range-LU pairsplit-r

option.

• This pair was suspended due to a failure that did not affect

the entire consistency group, and the Error Level pair option

for this pair is set to LU.

Volume

XP Continuous Access Asynchronous volume pair was split or

suspended with other pairs in its consistency group. Update

sequence consistency between this S-VOL and other S-VOLs in

this consistency group is ensured. This S-VOL can be used for

disaster recovery at the secondary (remote) system (after deleting

the XP Continuous Access Async pair from the RCU). This status

is indicated when:

• You split this pair using the Suspend Range-Group pairsplit-r

option.

• All pairs in this consistency group were suspended due to a

failure that affected the entire consistency group, not just one

pair (for example, MCU-RCU communication failure).

• One pair in the group was suspended due to a failure that

did not affect the entire group, and the Error Level pair option

for this pair is set to Group.

Group

XP Continuous Access suspend types

“XP Continuous Access suspend types” (page 28) describes XP Continuous Access suspend types,

which indicate the reason for suspension. Only the MCU can suspend XP Continuous Access

XP Continuous Access volume pair status 27