HP XP P9500 Storage - Manual (Page 37)

Figure 9 ESAM pair status transitions
1. If a volume is not assigned to an ESAM pair, its status is SMPL.
2. Create an ESAM pair using SMPL volumes. During copy processing, the status of the P-VOL
and the S-VOL changes to COPY.
3. The status of the P-VOL and the S-VOL changes to PAIR when copy processing completes.
4. If you split the pair, the status of the P-VOL and the S-VOL changes to PSUS (pair suspended-split,
split by command).
5. When the MCU cannot keep the P-VOL and the S-VOL synchronized due to an error condition,
the status of the P-VOL and the S-VOL changes to PSUE (pair suspended-error, split due to an
error). If the MCU cannot communicate with the RCU, the status of the S-VOL stays PAIR.
6. If a failover occurs in the storage system, the status of the S-VOL changes to SSWS, and the
status of the P-VOL changes to PSUS.
7. When you resynchronize the pair in PSUS or PSUE status (see No.4 and No.5), the status of
the P-VOL and the S-VOL changes to COPY.
8. When you resynchronize the pair whose S-VOL is in SSWS status (see No.6), (using the RAID
Manager pairresync -swaps command on the S-VOL), the P-VOL and the S-VOL are
swapped and the pair status changes to COPY.
9. When you release the pair, the status of the P-VOL and the S-VOL changes to SMPL.
Pair status descriptions
Status descriptions are provided in the following table. Click File/Refresh to make sure data is
current.
Table 5 Pair status descriptions
Access Access Description Status
Monitoring pair status 37