Overview:

Data Archiving which is the disciplined process by which data is migrated or copied and migrated for long term retention under a chain of custody control to media at designated archive location/s where retention, security, retrieval, rendering, and authentication are all specified by formalized archiving policy

• The value of data changes over time…
  • Spend more to protect it when it is at its highest value
  • Spend less, when it’s at a lower value
  • Business seeks to align the management of data with its actual business value to the organization

Data Archiving Impact

• Storage
  • Slower rate of tier-1 storage growth
  • Improve application performance
  • Backup
    • Reduce exponential growth
    • Improve performance
    • Enabler for disk-based backup
    • Disaster Recovery
      • Enable faster recovery (improve RTO)
      • Reduce DR infrastructure requirements

Service Level Considerations:

Recovery Time Objective is the maximum tolerable elapsed time (from actual disaster not declaration) for restoration of business operational viability

• Retrieval Time objective is the target upper limit of elapsed time (latency) allowable for retrieval of a specified archived object
• Recovery Point Objective is the maximum tolerable data loss on recovery from a disaster, normally expressed as a time metric (e.g. one hour)

Possible solution:

HSM (Hierarchical Storage Management) is the disciplined migration of data from production storage to less expensive storage based on the value of the data or its access requirement; HSM is substantially transparent to the accessing application.