HP XP7 Storage - Manual (Page 157)

Table 30 Continuous Access Synchronous and Business Copy pair status (continued)
Secondary Primary Business Copy Pair Status Continuous Access Synchronous Pair
Status Status
R enabled R/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 enabled R/W enabled
if no error Not used for Business Copy Used 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
Secondary Primary Continuous Access Journal Pair Status Status
R/W enabled R/W enabled Unpaired volume SMPL
R enabled R/W enabled The pair is synchronized. Updates to the P-VOL are duplicated on
the S-VOL. PAIR
R enabled R/W enabled In 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 enabled The 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 enabled R/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 enabled If 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