HP StorageWorks - Figures; Preparing for External Storage XP Operations; External Storage XP Concept

14 External Storage XP for the XP12000/XP10000
• If you use Flex Copy XP with External Storage XP, you can copy data in the external disk array to the
local disk array and copy data in the local disk array to the external disk array.
For more information about Flex Copy XP, see the HP StorageWorks Flex Copy XP user guide.
Figure 1 illustrates a local disk array and an external disk array that are connected using External Storage
XP and Fibre Channel hardware. In Figure 1, the external disk array is connected to the external port of the
local disk array via a switch (or hub) using a Fibre Channel interface. External is a kind of
XP12000/XP10000 port attribute used for External Storage XP. In Figure 1, external LUs are mapped as
local disk 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 disk array. Also, do not access an External Storage XP mapped
external array volume using the external disk array’s functions (for example, local replication). After
mapping an external disk volume as a local XP12000/XP10000 volume, access the mapped external
disk volume only via the local XP12000/XP10000 disk array.
NOTE: With the exception of MSA, a host can directly access external disk array volumes that have not
been mapped as local disk array volumes.
Figure 1 External Storage XP concept
Preparing for External Storage XP operations
This section describes requirements, preparations, and notes for External Storage XP. This section also
describes the HP StorageWorks products you can use with External Storage XP.
• ”System requirements” on page 15
• ”External Storage XP requirements” on page 19
• ”Installing External Storage XP” on page 19
• ”Preparing for External Storage XP settings” on page 19
• ”Turning a disk array’s power on or off” on page 27
• ”Using mapped external LUs from the host connected to the local disk array” on page 29
• ”Uninstalling External Storage XP” on page 31
• ”Limitations on External Storage XP operations” on page 32