What is IBM Tivoli Storage Manager TSM ?

IBM Tivoli Storage Manager which is now renamed as IBM Spectrum Protect is an enterprise-wide storage management application. It provides automated storage management services to workstations, personal computers, and file servers from a variety of vendors, with a variety of operating systems.

Read: IBM Spectrum Protect (TSM) Basic Free Tutorials

Tivoli Storage Manager (TSM) Basic Components:

TSM consists of TSM Server, TSM client and TSM for Space Management. These components are described below

TSM Server Components

TSM Server Program
The server program provides backup, archive, and space management services to the clients. You can set up multiple servers in your enterprise network to balance storage, processor, and network resources.

TSM Administrative Interface 
The administrative interface allows administrators to control and monitor server activities, define management policies for clients, and set up schedules to provide services to clients at regular intervals. Administrative interfaces available include a command-line administrative client and a Web browser interface called the Administration Center. Tivoli Storage Manager allows you to manage and control multiple servers from a single interface that runs in a Web browser.

Server Database and RecoveryLog
The Tivoli Storage Manager server uses a database to track information about server storage, clients, client data, policy, and schedules. The server uses the recovery log as a scratch pad for the database, recording information about client and server actions while the actions are being performed. 

Server storage
The server can write data to hard disk drives, disk arrays and subsystems, stand-alone tape drives, tape libraries, and other forms of random- and sequential-access storage. The media that the server uses are grouped into storage pools. The storage devices can be connected directly to the server, or connected via local area network (LAN) or storage area network (SAN).

TSM Client Nodes

A client node can be a workstation, a personal computer, a file server, or even another Tivoli Storage Manager server. The client node has IBM Tivoli Storage Manager client software installed and is registered with the server. Network-attached storage (NAS) file servers can also be client nodes, but when using NDMP, they do not have Tivoli Storage Manager client software installed.

TSM Backup-archive client
The backup-archive client allows users to maintain backup versions of files, which they can restore if the original files are lost or damaged. Users can also archive files for long-term storage and retrieve the archived files when necessary. Users themselves or administrators can register workstations and file servers as client nodes with a Tivoli Storage Manager server. The storage agent is an optional component that may also be installed on a system that is a client node. The storage agent enables LAN-free data movement for client operations and is supported on a number of operating systems.

Network-attached storage file server (using NDMP)
The server can use the Network Data Management Protocol (NDMP) to back up and restore file systems stored on a network-attached storage (NAS) file server. The data on the NAS file server is backed up to a tape library. No Tivoli Storage Manager software needs to be installed on the NAS file server. A NAS file server can also be backed up over the LAN to a Tivoli Storage Manager server.

TSM Application client
Application clients allow users to perform online backups of data for applications such as database programs. After the application program initiates a backup or restore, the application client acts as the interface to Tivoli Storage Manager. The Tivoli Storage Manager server then applies its storage management functions to the data. The application client can perform its functions while application users are working, with minimal disruption.

The following products provide application clients for use with the Tivoli Storage Manager server: 
  1. Tivoli Storage Manager for Databases 
  2. Tivoli Storage Manager for Enterprise Resource Planning 
  3. Tivoli Storage Manager for Mail
TSM Application programming interface (API)
The API allows you to enhance existing applications to use the backup, archive, restore, and retrieve services that Tivoli Storage Manager provides. Tivoli Storage Manager API clients can register as client nodes with a Tivoli Storage Manager server.

Read: Tivoli Data Protection (TDP) Installation & Configuration Steps

Tivoli Storage Manager for Space Management

Tivoli Storage Manager for Space Management provides space management services for workstations on some platforms. The space management function is essentially a more automated version of archive. Tivoli Storage Manager for Space Management automatically migrates files that are less frequently used to server storage, freeing space on the workstation. The migrated files are also called space-managed files. Users can recall space-managed files automatically simply by accessing them as they normally would from the workstation. Tivoli Storage Manager for Space Management is also known as the space manager client, or the hierarchical storage management (HSM) client.

Client programs such as the backup-archive client and the HSM client (spacemanager) are installed on systems that are connected through a LAN and are registered as client nodes. From these client nodes, users can back up, archive, or migrate files to the server.

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