Selective Storage Presentation - HP StorageWorks XP12000 User Manual

presentation to the XP12000/XP10000/SVS200. For example, suppose you want to create a 40 GB
(40960 MB) LU on the MSA for use as XP12000/XP10000/SVS200 external storage. If you request only
the exact size needed, the ACU optimizes the LU to a size of 40959 MB, which is 1 MB smaller than
needed. In this case, the optimization algorithm the ACU uses can be compensated for by specifying a
size of 40963 MB, which results in the correct size of 40960 MB (40 GB).
Figure 77 Defining MSA LUs with ACU

Selective Storage Presentation

You must institute LUN security on MSAs using the ACU Selective Storage Presentation (SSP) feature
(Figure 78). Use SSP to limit access to individual MSA LUs (in this case, logical drives 1 and 2) by selected
host (or XP12000/XP10000/SVS200) HBA world wide names. When using SSP, set the operating system
mode corresponding to the XP12000/XP10000/SVS200 array port WWN to TRU64. For more
information about configuring the MSA using the ACU, see the ACU Online User Guide.
Figure 78 Configuring SSP with ACU
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