HP StorageWorks XP Remote Web Console Software - Manual (Page 14)

14 Overview of connecting external arrays
Figure 1 illustrates a local array and an external array that are connected using External Storage XP and
Fibre Channel hardware. In Figure 1 , the external array is connected to the external port of the local
array via a switch (or hub) using a Fibre Channel interface. External is a local array port attribute used for
External Storage XP. In Figure 1 , external LUs are mapped as local array VDEVs and LDEVs and,
consequently, as an LU.
NOTE: Do not access any external storage volume that is mapped as an External Storage XP volume
from a host connected directly to the external array. Also, do not access an External Storage XP mapped
external array volume using the external array’s functions (for example, local replication). After mapping
an external LU as a local array volume, access the mapped external LU only from the local array.
NOTE: Except on the MSA, a host can directly access external array volumes that have not been
mapped as local array volumes.
Figure 1 External Storage XP concept