HP StorageWorks XP24000/XP20000 Thin Provisioning Software User Guide (T5227-96015, May 2011)

Figure 9 Using XP Thin Provisioning and XP Continuous Access Journal
Table 7 Supported XP Continuous Access Journal and XP Thin Provisioning Combinations
ExplanationXP Continuous Access Journal S-VOLXP Continuous Access Journal P-VOL
Supported
At initial PAIR create time, pages in the
S-VOL are freed if not needed for
replicating the P-VOL.
XP Thin Provisioning V-VOLsXP Thin Provisioning V-VOLs
SupportedNormal volumesXP Thin Provisioning V-VOLs
Supported
This combination consumes the same
amount of pool capacity as the original
normal volume (P-VOL).
XP Thin Provisioning V-VOLsNormal volumes
NOTE: You cannot specify an XP Thin Provisioning pool-VOL as an XP Continuous Access Journal P-VOL or S-VOL.
If the cache write pending rate exceeds 55%, the copy process stops temporarily.
Using XP Business Copy Software
You can use XP Thin Provisioning in combination with XP Business Copy Software to replicate
V-VOLs. You can also use XP Business Copy as a tool to move the data of the V-VOL for I/O load
reasons. HP recommends movement between the P-VOL in pool A and the S-VOL in pool B.
Figure 10 (page 22) illustrates the interaction when the XP Business Copy P-VOL and S-VOL are
also XP Thin Provisioning V-VOLs. Table 8 (page 22) lists the specifics.
Figure 10 Using XP Thin Provisioning and XP Business Copy
Table 8 Supported XP Business Copy and XP Thin Provisioning Combinations
ExplanationBusiness Copy S-VOLXP Business Copy P-VOL
SupportedXP Thin Provisioning V-VOLsXP Thin Provisioning V-VOLs
Supported, but the Quick Restore
function is not available.
Normal volumesXP Thin Provisioning V-VOLs
NOTE: This combination consumes
the same amount of pool capacity as
the normal volume (P-VOL).
XP Thin Provisioning V-VOLsNormal volumes
22 About XP Thin Provisioning Operations