EMC CLARiiON 300002039 - Manual (Page 17)

Determining whether to install the host agent or server utility
Depending on your application needs, you can install the host agent,
server utility, or both on an attached server.
If you want to install both applications, you must install revision
6.22.20 or later of the server utility either before or after you install the
host agent. The registration feature of the server utility will be disabled
and the host agent will be used to register the server’s NICs or iSCSI
HBAs to the storage system.
Note : Prior to revision 6.22.20 of the server utility, you could not install the host
agent and server utility on the same server. However, you could install them
on different servers that are connected to the same storage system.
If you do not want to install both applications, but want to use some
of the features available in the server utility, you can run the server
utility from the server support CD.
If you have an AX-series storage system running Navisphere Express,
you must install the server utility. The host agent is supported only
on CX3-series, CX-series, and AX-series storage systems running
Navisphere Manager.
Table 1 describes the differences between the host agent and the server
utility on a server attached to a storage system.
Important : Depending on the revision of the server utility, some of the features
listed in Table 1 may not be available.
EMC CLARiiON Server Support Products for Solaris Server Installation Guide 17