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CAUTION:
Because the S-VOL's access attribute is changed after copying the P-VOL's access attribute, be careful
aboutaccessattributesofvolumestobespecified as BC pairs. For example, if the P-VOL's access attribute
is S-VOL Disable, the S-VOL's access attribute is also S-VOL Disable after copying the access attribute.
You cannot perform Pairresync operations on the S-VOL that has the S-VOL Disable access attribute. You
must change the access attribute to something other than S-VOL Disable. For more information about
changing the access attribute, see the
HP StorageWorks LUN Security XP Extension user guide
.
You can set VMA, which is required to copy the access attribute, only when the volume's emulation type
is OPEN-V. Table 18 shows whether you can create pairs according to the VMA setting.
Whether you can use LUN Security XP Extension to change or reference the access attribute for BC pair
volumes depends on the pair status. Table 18 shows the availability of LUN Security XP Extension
operations according to the pair status.
Table 18 Pair status and availability of LUN Security XP Extension operations
Volume
Pair status LUN Security XP Extension
OK OK
COPY (PD) OK OK
PAIR
OK OK
COPY (SP) OK OK
PSUS (SP) OK OK
PSUS OK OK
COPY (RS) OK OK
COPY (RS-R)
No
OK
1
P-VOL
PSUE OK OK
SMPL
OK OK
2
COPY (PD)
No
OK
1, 2
PAIR No
OK
1, 2
COPY (SP)
No
OK
1
PSUS (SP) OK OK
PSUS OK OK
COPY (RS)
No
OK
1, 2
COPY (RS-R)
No
OK
1, 2
S-VOL
PSUE
No
OK
1, 2
Reserve volume
-
OK OK
1
If the VMA copy is not completed, referred information might not be the same as the P-VOL’s information.
2
When the S-VOL’s mode is “noread”, you can refer to the access attribute only when the pair status is COPY(SP), PSUS, or
PSUS(SP). For more information about the “noread” mode, see the HP StorageWorks RAID Manager XP user guide.
License capacity of LUN Security XP Extension
To create BC pairs using volumes with VMA, you need the license capacity of LUN Security XP Extension
for both P-VOLs and S-VOLs. This is because the S-VOLs have the same access as the P-VOLs when the
access attribute copy is complete. For more information about copying access attributes, see Figure 24.
Business Copy XP user guide
51