Disaster recovery is the process, policies and procedures that are related to preparing for recovery or continuation of technology infrastructure which are vital to an organization after a natural or human-induced disaster. Disaster recovery is a subset of business continuity. While business continuity involves planning for keeping all aspects of a business functioning in the midst of disruptive events, disaster recovery focuses on the IT or technology systems that support business functions.
As IT systems have become increasingly critical to the smooth operation of a company, and arguably the economy as a whole, the importance of ensuring the continued operation of those systems, and their rapid recovery, has increased. For example, of companies that had a major loss of business data, 43% never reopen and 29% close within two years. As a result, preparation for continuation or recovery of systems needs to be taken very seriously. This involves a significant investment of time and money with the aim of ensuring minimal losses in the event of a disruptive event.
IBM® Tivoli Storage Manager (TSM) is a storage management application built for the enterprise. TSM provides an enterprise solution for data protection, disaster recovery, space management, and record retention. TSM facilitates flexible and scalable storage management policies to support complicated business needs for storage management and disaster recovery. Most importantly, TSM automates storage management tasks by eliminating labor and cost intensive manual procedures for backup, archive, and recovery.
TSM storage management solutions include:
Operational Backup and Restore of Data: The backup process creates a copy of the data to protect against the operational loss or destruction of file or application data. The customer defines how often to back up (frequency) and how many copies (versions) to hold. The restore process places the backup copy of the data back onto the designated system or workstation.
Disaster Recovery: By the creation of multiple copies of enterprise data, TSM supports the implementation of site to site recovery operations. Disaster Recovery with TSM includes moving data to offsite locations, rebuilding or initializing TSM infrastructure, and reloading data to clients in an acceptable time frame.
Vital Record Retention, Archive, and Retrieval: The archive process creates a copy of a file or a set of files for long term storage. Files can remain on the local storage media or can be deleted. The customer controls how long (retention period) an archive copy is to be retained. The retrieval process locates the copies within the archival storage and places them back into a customer-designated system.
Hierarchical Space Management: This process provides the automatic and transparent movement of operational data from the user system disk space to a central storage repository. If the user needs to access this data, it is dynamically and transparently restored to the client storage.