HP StorageWorks XP Remote Web Console Software - Manual (Page 41)

Figure 12 External LU capacity is larger than the specified emulation type's basic capacity (OPEN-3
example)
.
Figure 13 External LU capacity is smaller than the specified emulation type's basic capacity
.
• IO Suppression mode can only be selected when the volume being mapped is set to the OPEN-V
emulation type. If a different emulation type is set, IO Suppression mode is automatically set to
Disable.
• If you use the mapped external LU from the host connected to the local array, set the IO Suppression
mode to Disable when mapping the LU. For XP External Storage, select Disable. For XP Flex Copy,
select Enable.
• If you use the mapped external LU for the copy source or copy destination volume for an XP Flex
Copy pair, set the emulation type to OPEN-V when mapping the volume.
• If you use the mapped external LU for the copy source or copy destination volume for an XP Flex
Copy pair, set IO Suppression mode to Enable when mapping the volume.
• The local array does not force the external array to reserve the mapped external LU. Therefore,
do not write directly to an external array LU (that is, without writing via the local XP array) with
IO Suppression mode set to Disable from the external array side.
If XP Flex Copy operations are in progress for a volume with IO Suppression mode set to Enable,
be careful when updating data in that external LU from the external array side.
• IO Suppression mode is automatically set to the same status for all LDEVs in a given external LU.
• Cache Mode is automatically set to the same status for all LDEVs in a given external LU.
• If you set an open-system emulation type (such as OPEN-V) when mapping the external LU, you
can use the external LU immediately.
XP External Storage Software User Guide 41