HP StorageWorks XP Remote Web Console Software - Manual (Page 159)

NOTE:
If you combine LDEV00, LDEV03, and LDEV05 into LUSE 1, combine LDEV02 and LDEV04 into
LUSE 2, and combine LDEV06 and LDEV07 into LUSE 3, you can also combine LUSE 1 and LUSE
3. However, you cannot combine LUSE 1 and LUSE 2, because the LDEV range in LUSE 1 and
LUSE 2 overlap.
• The maximum capacity of a LUSE volume is 60 TB.
NOTE:
When a host accesses a LUSE volume, the host can only access less than 2 TB of the LUSE volume's
address area.
• Combining command devices and Just In Time volumes into a LUSE volume is not supported.
• The access attribute must be set to Read/Write.
• Combining internal LUs, external LUs, and virtual volumes (V-VOLs) is not supported.
• During online, the host mode must not be 0x0C [Windows].
• The I/O suppression mode and cache mode settings of LDEVs combined into a LUSE volume must
be the same.
• All LDEVs combined into a LUSE volume must be of the same drive type (either SATA drive or non-
SATA drive).
• VMAs are not set to LDEVs.
NOTE:
For more information about volume management areas (VMAs), see the HP StorageWorks XP
Secure Manager XP Extension user guide .
• LDEVs are not pool volumes (pool-VOLs).
• LDEVs are not journal volumes.
The following are the specifications and restrictions on LDEVs released from a LUSE volume:
• The LUSE volume must not have a defined path.
• The access attribute must be set to Read/Write.
Volume Manager operations using a path-defined LDEV
When you create a LUSE volume, the top LUSE volume can be either an LDEV or LUSE volume that
has one or more paths defined to it. Only the top volume in the LUSE volume to be created can have
any paths. Other volumes in the LUSE volume to be created must not have any paths.
NOTE:
You can perform a Volume Manager operation using a path-defined LDEV regardless of how many
paths are defined to the LDEV.
XP LUN Configuration and Security Manager User Guide 159