HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

S-VOL accessP-VOL accessDescriptionBCM statusRWC status
SUSPER (07),
SUSPOP (0A)
• In Suspended status, updates to the S-VOL stop.
The storage system keeps track of updates to the
P-VOL in order to update the S-VOL when the
pair is resynchronized.
• When you suspend the pair from the remote
system, that system changes the status of the
S-VOL to Suspended. The main system detects
this and changes P-VOL status to Suspended.
• When you release the pair from the remote
system, that system changes the S-VOL status to
Simplex. The main system detects this and
changes the P-VOL status to Suspended. The pair
must be released from the main system in order
to change P-VOL status to Simplex.
BCM suspend statuses initiated by the user:
• SUSPOP (O3): The user suspended the pair from
the P-VOL.
• SUSPOP (04): The user suspended the pair from
the S-VOL. If the P-VOL is updated, it is recorded
as differential data.
• SWAPPING (04): The user suspended the pair
in the reverse direction (S-VOL to P-VOL).
• SUSPOP (05): The remote system received a
suspended request from the main system and
suspended the pair.
• SUSPER (07): The user deleted the pair from the
remote system. The main system detected this
and suspended the P-VOL.
• SUSPOP (0A): The pair was suspended because
the user issued PPRC’s FREEZE command on the
main system.
Read Only if
Mode=20 is
Read/Write.
Read only if
P-VOL fence
level is Data.
SUSPCU (06) (by
error), SUSPCU
(08), SUSPER
(09), SUSPER
(50)
Suspended
(See also
“Suspended
types”
(page 77).)
• If the main system cannot keep the pair
synchronized for any reason, it changes the
status of the P-VOL and S-VOL (if possible) to
Suspended.
ON,
otherwise No.
• The pair is not synchronized.
BCM also includes the following:
• SUSPCU (08): The pair was suspended when
the main system detected an error during the
communication with the remote system, or
detected an I/O error during update copy.
• SUSPER (09): The pair was suspended because
the main system detected volatilization of pair
control information on memory when power was
ON (IMPL). This error occurs when power-off
status of the main system continues beyond the
backup time for the nonvolatile memory.
• SUSPER (50): The pair was suspended because
data mismatch between P-VOL and S-VOL was
detected during the initial copy operation. The
cause of the error is invalid track format.
1
When pair status is Pending, neither cache nor shared memory can be added to or removed from the storage system.
When either of these tasks is to be performed, first split any pairs in Pending, status, then resynchronize when the
cache or shared memory operation is completed.
76 Monitoring and maintenance