HP StorageWorks XP Remote Web Console Software - Manual (Page 13)

1 Overview of connecting external arrays
HP StorageWorks XP External Storage realizes the virtualization of storage arrays. You can use XP
External Storage to access multiple storage arrays connected by a Fibre Channel interface as if they
were all one storage array. Once you connect another storage array to an XP array or storage
virtualization system using XP External Storage, you can also use XP Command View Advanced Edition
Software or Remote Web Console to manage the data space (but not necessarily the management)
of the other storage arrays.
XP External Storage supports external storage LDEVs of any standard XP emulation type, such as
OPEN-3, OPEN-8, OPEN-9, OPEN-L, OPEN-K, OPEN-V, 3390-3, or 3390-0.
NOTE:
Currently only the HP StorageWorks XP12000 and XP10000 Disk Arrays and the HP StorageWorks
200 Storage Virtualization System (SVS200) support external storage.
In this user guide, the original XP12000/XP10000/SVS200 is called the local array and the connected
storage array is called the external array. The volume managed in the local array is called an internal
storage virtualizer LDEV (or internal LDEV), and the volume in an external array is called an external
LU.
IMPORTANT:
This guide contains information about internal disks or LDEVs. Unlike the XP12000/XP10000 Disk
Arrays, the SVS200 has no internal disks. Therefore, information about internal disks or LDEVs does
not apply to the SVS200.
With the help of host mirroring middleware, HP StorageWorks XP Auto LUN Software or HP
StorageWorks XP Tiered Storage Manager, you can use XP External Storage Software for online or
offline data migration, providing a point-in-time copy of data between an external device and the
local array.
HP StorageWorks XP Flex Copy is another HP StorageWorks product that copies user data between
an LU on a local array and an LU on an external storage device. For a detailed description of XP Flex
Copy, see the HP StorageWorks Flex Copy XP user guide.
XP External Storage features
The following are XP External Storage features:
• Using XP External Storage to map an external LU as an internal LDEV, you can manage the external
LU capacity using XP Command View Advanced Edition Software or Remote Web Console as if
it were a volume in the local array.
Mapping means assigning Virtual Devices (VDEVs) and, consequently, Logical Devices (LDEVs)
and host port LUs to external LUs. If you map external LUs as internal VDEVs, you can use XP
XP External Storage Software User Guide 13