Software Manual

3 Using the Host Explorer
The chapter provides instructions for using the HP 3PAR Host Explorer.
Verifying the Host Explorer package is installed
To verify that the Host Explorer package has been installed correctly, see the appropriate section
below:
• To find out if the product is installed on a Solaris system, see “Verifying the installation on
Solaris Sparc/x86 systems” (page 10).
• To find out if the product is installed on a Linux system, see “Verifying the installation on Linux
(RHEL/SLES) systems” (page 9).
• To find out if the product is installed on a Windows system, see “Verifying the installation on
Microsoft Windows Server” (page 8).
• To find out if the product is installed on a Windows system for VMware , see “Verifying the
installation of Host Explorer for VMware on Microsoft Windows Server” (page 11).
Verifying whether the Host Explorer process is running
• To verify that the Host Explorer process is running, issue the TpdHostAgent status
command.
• In case of Host Explorer for VMware, issue the VMTpdHostExplorer status command.
Stopping the Host Explorer process
By default, the Host Explorer process starts at every reboot of the host.
• If you do not want the process running on the host, issue the TpdHostAgent stop command.
• In case of Host Explorer for VMware, issue the VMTpdHostExplorer stop command.
Starting the Host Explorer Process
• To start the Host Explorer process, issue the TpdHostAgent start command.
• In case of Host Explorer for VMware, issue the VMTpdHostExplorer start command.
Supporting Multiple Storage Systems on a Single Host
The HP 3PAR Host Explorer reports the information it collects to every HP 3PAR StoreServ Storage
system attached to the host. If a storage system is added or removed after the initial installation of
the HP 3PAR Host Explorer, a refresh is needed.
• To refresh the Host Explorer process, issue the TpdHostAgent refresh command.
• In case of Host Explorer for VMware, issue the VMTpdHostExplorer refresh command.
The Host Explorer Enclosure Device LUN
When a host is connected to an HP 3PAR StoreServ Storage system, an enclosure device with LUN
ID 254 is automatically configured for the host. The HP 3PAR Host Explorer uses this enclosure
device to exchange information about the host with the storage system. The LUN with ID 254 acts
as both a data LUN and an enclosure service LUN. You can use LUN ID 254 for any application
with limited impact on performance. The level of impact on performance depends on the application.
The LUN with ID 254 is presented to the host even when no virtual volumes are exported to the
host, or when the host is not configured on the storage system.
Verifying the Host Explorer package is installed 13