Alex,
Page 18 of the SnapManager for SharePoint 6.1 Installation and Administration Guide lists where you should install the components:
SnapManager for SharePoint Manager can be installed on any machine on the network meeting the requirements described in “Windows Host System Requirements” on page 4. The machine it is installed on serves as the interface to access the SnapManager for SharePoint application from other machines. You can install this application on one of the SharePoint farm servers. For medium to large size farms, it is recommended to use a dedicated host or VM.
SnapManager for SharePoint Media Server can be the same server that has the SnapManager for SharePoint Manager installed. The SMSP Media Server performs the management of backup index data and SMSP Archiver data. In really large farms where SMSP Archiver is deployed, you can have additional media servers deployed.
There are four types of agents in SnapManager for SharePoint Agent, which can be deployed separately or on the same server depending on the needs of the environment:
Control Agent:
Used to coordinate the backup process. It should only be installed on the SharePoint server that hosts the Central Administration role.
Member Agent:
Does the actual backup of related SharePoint data. It should be installed on all the servers in the SharePoint farm that contain data to be backed up. For example: the Microsoft SQL Server (for database backups), the SharePoint index server (for search index backups), and the SharePoint web front-end server (for web front-end resource backups such as IIS backups).
Archiver Agent:
This should be installed on all web front-end servers and the Central Administration server in this farm.
Extender Agent:
This should be installed on all web front-end servers and the Central Administration server in this farm.
The agents are the same installation package, you configure the agent role via the agent configuration UI.
The SharePoint databases are backed up via SnapManager for SQL which SMSP calls during the backup. Your SQL server must be configured to have the databases on NetApp LUNs in the correct layout for valid SnapManager for SQL backups to be created. The SMSP Member agent on the SQL server passes backup and restore cmdlets to SMSQL for backup and restore.
The SharePoint Search Index data is located on a NetApp LUN connected to the SharePoint Search server. The SMSP Member agent on the SharePoint search server passes backup and restore commands to SnapDrive for backup and restore of the Search Index data.
The SMSP member agent also backs up SharePoint components installed on SharePoint Web Front End servers. Pages 138-141 of the SMSP IAG contains the list of components in a SharePoint farm that SMSP can backup.
Thanks,
Mark