HP XP Racks - Manual (Page 32)

The following table describes pair status in RAID Manager.
Description Item
The volume is not assigned to an ESAM pair. SMPL
The initial copy for an ESAM pair is in progress, but the pair is not synchronized yet. COPY
The initial copy for an ESAM pair is completed, and the pair is synchronized. PAIR
Although the paired status is retained, the user split the ESAM pair, and update of S-VOL is stopped.
This status only applies to SVOL. While the pair is split, the storage system keeps track of updates
to P-VOL. PSUS
Although the paired status is retained, the user split the ESAM pair, and update of S-VOL is stopped.
This status only applies to P-VOL. If the pair is split with the option of permitting update of S-VOL
specified, the storage system keeps track of updates to S-VOL. SSUS
Although the paired status is retained, update of S-VOL is stopped because of an error status.
PSUE is the same as PSUS (SSUS) in terms of symptom; the difference is that PSUE is caused by
an internal error. PSUE
This status is shown only for pairs using LUSE. Although the paired status is retained, the pair status
transition is suspended because of an error in some LDEVs within LUSE. PDUB
The paired status is retained. Processing for resync with P-VOL and S-VOL swapped
(horctakeover command) is in progress. SSWS
Split types (PSUS status)
Split types are shown in the Detailed Information dialog box; they specify the reason a pair is split.
When you split a pair, the pair status changes to PSUS and the system stops updates to the S-VOL.
You can set an option to block updates to the P-VOL also while the pair is split. This results in the
P-VOL and S-VOL staying synchronized.
If the P-VOL accepts write I/O while the pair is split, the primary storage system records the updated
tracks of the P-VOL as differential data. This data is copied to the S-VOL when the pair is
resynchronized.
The following table lists PSUS types.
Description Applies to Split type
The user split the pair from the primary storage system using the P-VOL Failure
on the Suspend Type option for Suspend Kind. The S-VOL split type is PSUS-by
MCU. P-VOL P-VOL by Operator
The user split the pair from the primary or secondary storage system using
the S-VOL on the Suspend Type option for Suspend Kind. Or, the pair is split
because of a failover in the storage system. P-VOL
S-VOL
S-VOL by Operator
The secondary storage system received a request from the primary storage
system to split the pair. The P-VOL split type is PSUS-P-VOL by Operator or
PSUS-S-VOL by Operator. S-VOL by MCU
The primary storage system detected that the S-VOL status changed to SMPL
because the user released the pair from the secondary storage system. The P-VOL Delete pair to RCU
pair cannot be resynchronized because the S-VOL does not have the
PSUS/PSUE status.
Suspend types (PSUE status)
Suspend types are shown in the Detailed Information dialog box; they specify why the pair was
suspended by the system.
32 Working with volume pairs