Continuous Access Xp Suspend Types; Continuous Access Xp Split Types (Psus); Consistency Status Descriptions For Split/Suspended Continuous Access Xp Async S-Vols - HP xp12000 User Manual

A split (or suspended) Continuous Access XP 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

Continuous Access XP split types (PSUS)

Type
PSUS,
P-VOL by Operator
PSUS,
S-VOL by Operator
PSUS,
by MCU
PSUS,
Delete pair to RCU
Table 8describes the consistency status for split or suspended Continuous Access XP Async S-VOLs
(consistency status is displayed only at the RCU).
Table 8

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

Consistency status
(displayed at RCU)
Volume
Group

Continuous Access XP suspend types

Table 9 describes Continuous Access XP suspend types, which indicate the reason for suspension. Only the
MCU can suspend Continuous Access XP Synchronous pairs. The MCU or RCU can suspend Continuous
Access XP Asynchronous pairs. For further information, see
conditions" on page 30
The MCU suspends a Continuous Access XP pair when it detects the following suspension conditions:
• The MCU detects that you deleted the volume pair from the RCU
• The MCU detects an error condition related to the RCU, S-VOL, or Continuous Access XP update copy
operation
• The MCU cannot communicate with the RCU
• The MCU detects a Continuous Access XP Asynchronous suspension condition
28 Continuous Access XP for the XP12000/XP10000
Applies to Description
You split the pair from the MCU using the P-VOL Failure option.
P-VOL
S-VOL split type is PSUS-by MCU.
Continuous Access
(
XP
Sync only)
P-VOL, S-VOL You split the pair from the MCU or RCU using the S-VOL option.
S-VOL 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.
P-VOL 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.
Description
Continuous Access XP 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.
Continuous Access XP 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 Continuous Access XP 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.
.
"Continuous Access XP Asynchronous suspension