HP XP External Storage Software - Manual (Page 40)

5. Use the Command View XP or XP Remote Web Console Licensing module to remove the Flex
Copy XP license key. For instructions, see the HP StorageWorks Command View XP user guide
for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for
XP12000/XP10000/SVS200.
6. For the local array, use the Command View XP or XP Remote Web Console Licensing module to
remove the External Storage XP license key. For instructions, see the HP StorageWorks Command
View XP user guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user
guide for XP12000/XP10000/SVS200.
Limitations on External Storage XP operations
• External LUs can be mapped as any CU:LDEV combination from 00:00 to 3F:FF.
• Only ports in SLPR0 can be set as external ports.
• 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 disk volume as a local array volume, access the mapped external disk volume
only via the local array.
• Except on the MSA, a host can directly access external array volumes that have not been mapped
as local array volumes.
• Continuous Access XP P-VOLs, S-VOLs, and journal volumes are not supported on MSA arrays.
• HP does not recommend that volumes involved with Snapshot XP reside on external MSA arrays.
• If you map an external LU that is more than 2 TB with the setting of OPEN-V emulation type, you
can access data stored in the field up to 2 TB. You cannot access data stored in the field over 2
TB.
• When mapping a volume that has a capacity of 2 TB or less in the external array and (external
LU) with the OPEN-V emulation type, the LU is defined as an internal LDEV with the same capacity
as the mapped external LU. That is, no space is forfeited for management space, and no formatting
of that data occurs. Therefore, OPEN-V is recommended.
Figure 11 Example of external LU with 2 TB or less
• If you map an external LU that is equal to or greater than 575.98 GB with an OPEN emulation
type other than OPEN-V, you can access data stored in the field up to 575.98 GB. You cannot
access data stored in the field over 575.98 GB.
However, for emulation types with a small base capacity, some of the field of 575.98 GB might
not be available. For more information, see
Required volume capacity for emulation types .
• If you map an external LU that is equal to or greater than 575.98 GB with a 3380 mainframe
emulation type, you can access data stored in the field up to 575.98 GB. You cannot access data
stored in the field over 575.98 GB.
However, for emulation types with a small base capacity, some of the field of 575.98 GB might
not be available. For more information, see
Required volume capacity for emulation types .
Preparing for External Storage XP operations 40