HP XP7 Storage - Manual (Page 20)

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Using volumes in a CU with several sessions.
To use volumes in a CU with several sessions, define the configuration as follows:
◦ Allocate all alias volumes allocated by Compatible PAV to the utility volumes in any
sessions.
◦ Consolidate all utility volumes for each session into one MP blade.
In this configuration, the record sets are created in multiple MP blades, but the Read Record
Set operation is performed in one blade. The data writing operations in a CU are performed
in multiple MP blades, therefore MP working ratio is averaged. However, we do not recommend
this setting, because processing is not efficient compared with assigning LDEVs in a CU to
multiple MP blades.
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Using the XRC Multiple reader function when the P-VOL uses PAV aliases.
We do not recommend this setting. It is not efficient, because record set creation when writing
data and the Read Record Set operation are both performed in multiple MP blades.
Using Compatible XRC with other HP XP7 Storage software
20 Interoperability with other products and functions