Õ:ei ole "kättesaadavus"
(mis on käideldavuse tarvilik,
aga mitte piisav komponent)
ega "juurdepääsetavus"

olemus
teabe turvalisuse põhikomponent:
- olemi teovõime ja kättesaadavus
volitatud kasutajale siis, kui see neid vajab
- kvalitatiivne ("on/ei ole käideldav")
- kvantitatiivne ("mil määral on käideldav")

ISO 7498, ISO/IEC 27000 jt:
omadus olla volitatud olemi nõudel
õigel ajal kättesaadav ja kasutuskõlblik
=
property of being accessible and usable on demand by an authorized entity

ülevaateid
http://www.eventhelix.com/RealtimeMantra/FaultHandling/reliability_availability_basics.htm

http://www.eventhelix.com/RealtimeMantra/FaultHandling/system_reliability_availability.htm

https://image.slidesharecdn.com/structuredapproachtoitbusinesssystemavailabilityandcontinuityplanninganalysisanddesign-100218122006-phpapp02/95/structured-approach-to-it-business-system-availability-and-continuity-planning-analysis-and-design-6-728.jpg

https://itsm.tools/2017/06/22/how-to-define-measure-and-report-service-availability/

https://en.wikipedia.org/wiki/Availability

http://storusint.com/img/articles/53_sp_ibm9703_03.gif

https://www.lifewire.com/thmb/U5sDIZAI_pCa7t-fjZLf-PLKBoM=/1389x648/filters:no_upscale():max_bytes(150000):strip_icc()/availability-levels-56a1adbb3df78cf7726cfd5c.png

http://lh6.ggpht.com/_p2ZBNGf_7w8/TWQs8X1kzgI/AAAAAAAAGFg/xehaGWf9X-g/Availability_thumb.png

https://slideplayer.com/slide/7746396/25/images/23/FA+%3D+VitA+%3D.jpg

https://deinoscloud.files.wordpress.com/2009/07/availabilitypyramid.jpg

http://www.openriskmanual.org/wiki/IT_Availability_Risk

https://www.isaca.org/resources/isaca-journal/past-issues/2010/availability-risk-assessment-a-quantitative-approach

http://slideplayer.com/slide/5264683/16/images/10/Availability+Controls.jpg

https://www.freecodecamp.org/news/high-availability-concepts-and-theory/

vt ka
- konfidentsiaalsus
- kõrgkäideldavus
- käideldamatus
- käideldavusklass
- saadavus
- terviklus
- ummistusrünne