====== Quality Control ======


The most critical component of any management framework is its ability to constantly measure its effectiveness with a goal of constantly improving each process and ensuring that there is no degradation in the overall quality of solution.  

{{:primer:qualitycontrol.png}}

When managing a tape library there are many indicators that can be used calculate the overall library health.

===== Quality Control Standards =====
  * The Quality Control mechanisms should provide an overall library score based on real-time information.
  * Quality Control scores should be recorded over time to produce a historical record of process performance and to visually demonstrate process improvement.
  * The Quality Control mechanism should provide a diagnosis along with clear instructions on how to cure all identified problems.

===== Quality Control Key Performance Indicators =====

  * Days since last library synchronization.
  * Existence of offsite tapes.
  * Days since last offsite.
  * Existence of pre-identified lists of critical tapes which need to be offsite.
  * Days since the last list of pre-identified tapes was produced.
  * Number of predefined lists which have one or more tapes not offsite.
  * Number of reconciliation errors.
  * Number of tapes with low quality scores.

<- primer:disaster_recovery|Disaster Recovery ^ primer:introduction|Introduction ^ ->