HP StorageWorks XP Business Copy User Guide: HP XP12000 Disk Array HP XP10000 Disk Array HP 200 Storage Virtualization System (T1713-96028, June 2010)

Figure 15 BC and Continuous Access XP: Shared P-VOL/P-VOL
.
The configuration shown in Figure 16 is an example of a volume functioning as both a Continuous
Access XP S-VOL and BC P-VOL. With this configuration, you can use BC to provide remote copies
of Continuous Access XP S-VOLs.
Figure 16 BC and Continuous Access XP: Shared P-VOL/S-VOL
.
CAUTION:
When you share a BC P-VOL with a Continuous Access XP S-VOL as shown in Figure 16, 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 for copying to the BC pair. In addition, in the case of Continuous Access XP Asynchronous,
the Continuous Access XP pair may be suspended and fail due to a shortage of capacity in its side
file.
The configuration shown in Figure 17 is an example of a volume functioning as both a Continuous
Access XP P-VOL and BC P-VOL, while the S-VOL of the same Continuous Access XP pair is also
functioning as the P-VOL of another BC pair. With this configuration, you can perform the following:
• Use BC to provide on-site backup copies of Continuous Access XP P-VOLs and S-VOLs
• Use Continuous Access XP to provide remote backup of BC P-VOLs
Business Copy XP (BC) for the Array46