Combining Continuous Access Xp And Lun Security Xp Extension; Copying Access Attributes; Shared Business Copy Xp S-Vol/Continuous Access Xp P-Vol; Access Attribute And Availability As A Continuous Access Xp Pair Volume - HP StorageWorks XP12000 User Manual

Figure 15 Shared Business Copy XP S-VOL/Continuous Access XP P-VOL
CAUTION:
This configuration requires that the BC pair be established in duplex mode (PAIR) and then split
(PSUS) before the Continuous Access XP pair is created.
CAUTION:
When you share a Continuous Access XP S-VOL with a BC P-VOL as shown in
the write operation to the Continuous Access XP P-VOL takes time. Especially, when the BC pair is
in the PSUS(SP) status, the write operation to the Continuous Access XP P-VOL may take extra time
due to the time needed copying to the BC pair. In addition, in the case of Continuous Access XP
Asynchronous, the Continuous Access XP pair may be suspended due to a failure caused by a
shortage of capacity in its side file.

Combining Continuous Access XP and LUN Security XP Extension

You can use Continuous Access XP to create a pair using the volumes that you used LUN Security XP
Extension to set the access attribute. However, you cannot create a Continuous Access XP pair by
specifying a volume that has the S-VOL Disable attribute as an S-VOL.
Table 15 shows whether you can specify a volume with access attribute as a P-VOL or S-VOL of a
Continuous Access XP pair.
Table 15 Access attribute and availability as a Continuous Access XP pair volume
Access attribute
Read/Write
Read Only
Protect
S-VOL Disable
Read Only and S-VOL Disable
Protect and S-VOL Disable

Copying access attributes

If you use LUN Security XP Extension to create a Continuous Access XP pair using the volumes to which
the VMA is set, you can copy the P-VOL's access attribute recorded in the VMA to the S-VOL. You can set
the VMA required to copy the access attribute only to OPEN-V volumes.
For more information about LUN Security XP Extension, see the HP StorageWorks LUN Security XP
Extension user guide.
48
Continuous Access XP for the Array
Availability as a Continuous Access XP pair volume
P-VOL
OK
OK
OK
OK
OK
OK
Figure 13 or
S-VOL
OK
OK
OK
NO
NO
NO
Figure 14