Can you explain this in a little more detail:
"I've also tried manually installing the client, but when I try to connect to the server I get an insufficient permissions error"
Connect to server? Which server, the client or the cell manager?
Have you checked hostname resolution:
From Installation server
nslookup client_hostname
nslookup client IP address
From the client:
nslookup cell_manager_hostname
nslookup cell_manager IP address
Is the DP INET service running on the client system?
Have you followed the requirements for installing on a client system
To install a Windows client, you must have the Administrator rights. The Windows system that will
become your future Data Protector client system must meet the following requirements:
• Have sufficient disk space for the Data Protector client software. For details, see the HP Data
Protector Product Announcements, Software Notes, and References
• Have port number 5555 (default) free.
• Have the Microsoft implementation of the TCP/IP protocol installed and running. The protocol
must be able to resolve hostnames. The computer name and the hostname must be the same.
• Ensure that network access user rights are set under the Windows local security policy for the
account performing the installation
• Due to the security restrictions imposed by the Windows operating system, Installation Server
can be used to remotely install clients only in the same domain
• When installing clients remotely to Windows Vista, Windows 7, or Windows Server 2008
systems, you must use one of the following accounts:
◦
A built-in administrator account on the remote system. The account must be enabled and
with disabled Admin Approval Mode.
◦
A domain user account, which is a member of the local Administrators user group on the
remote system.
One other thing, regarding this comment
"Is there a port that needs to be opened, or a feature that needs to be enabled for this to work?"
If the client is behind a firewall, it needs to be installed locally, and IMported into the cell. Part assignment comes later