Redundancy and diversity design
Critical functions are given independent backup paths, with diversity in supplier, technology and location so that one common cause cannot disable both.
GCRI · Rêveberiya xetera pergalî
Reliability and resilience engineering supply the design methods that keep pergalan working through failure: redundancy, diversity, graceful degradation and recovery planning. In xetera pergalî management they connect the analysis of risk to the engineering and organisational choices that reduce it.
Reliability and resilience engineering studies how pergalan fail, how failures can be prevented and how systems absorb, adapt and recover from disruption. It addresses both technical components and the organisations that operate them. In risk management and xetera pergalî and methods and modelling, resilience engineering identifies critical components and recovery bottlenecks across connected systems. It informs redundancy, spares and restoration priorities. The canonical description is on STEM Commons.
Critical functions are given independent backup paths, with diversity in supplier, technology and location so that one common cause cannot disable both.
Services are designed to shed lower-priority functions under stress and keep essential ones, with the order of shedding agreed before an event.
Recovery objectives are set for each service and tested in exercises, and the dependencies that lengthen recovery are identified and addressed.
Flood water, population density and active fires over Asia, from NASA GIBS. Each layer carries its own date.
Nexşeya înteraktîf JavaScript hewce dike; lîsteya qatan û çavkanî li jêr in.
Qat 3
Metirsî û rûbirûbûn, ji bo vê rûpelê
Klavye, dema ku nexşe di fokusê de ye
Ctrl an ⌘ bigire û bizivirîne da ku nêzîk bikî
Ya herî dawî ya heyî
NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth
Wêneyên herî nû yên NASA tê barkirin.
Bikişîne da ku bilivîne. Ctrl an ⌘ û zivirandin, pincandin an bişkojkan ji bo nêzîkkirinê; ji bo nirxên di bin nîşanderê de li ser bisekine; vegerandin vedigere herêmê.
Metirsî û rûbirûbûn, li ser Asyayê hatine çarçovekirin.Berhemên peyk û modelê wekî NASA diweşîne, her yek bi dîroka xwe. Nîşander in, ne nirxandinên tu cihî ne.
Qat û dîrok
Datasets and records used by reliability and resilience engineering on this platform, with the role each plays and the label its values carry. Sources are listed in the source register.
| Dane | Rol | Nîşan |
|---|---|---|
| Asset and component failure records | Reliability inputs | ÇAVDÊRÎKIRÎ |
| Continuity test results | Recovery performance | ÇAVDÊRÎKIRÎ |
| Design documentation | Redundancy and diversity structure | DECLARED |
| Incident and near-miss reports | Failure modes in practice | REPORTED |
The screen a team would use to follow this method: its measures, states and decisions. Names are examples and values are illustrative.
Systemic risk · Reliability and resilience · Run R-9568
nodes: assets · edges: dependencies
| N3 | 1470 | 35 | Critical |
| N4 | 6600 | 5 | Normal |
| N5 | 2499 | 15 | Normal |
| N6 | 6395 | 2 | Normal |
Reliability predictions are compared with field failure data. Exercises and post-event reviews check whether recovery performed as planned.
| Kontrol bikin | How it is done |
|---|---|
| Common-cause analysis | Redundant paths are checked for shared dependencies that could fail together |
| Exercise verification | Recovery objectives are verified in tests, not assumed from design |
| Failure mode review | Failure modes and effects are reviewed with operators who know the system |
Common-cause failures and rare events are hard to estimate from limited data. Human and organisational factors resist quantification.
Du stok, zext û kapasîteya adaptasyonê, bi xelekeke mezinbûna xurtkirinê, bersiveke hevsengker a dereng û zerarê ve girêdayî dema ku zext ji kapasîteyê derbas dibe; ji sînor derbas bibe pergal dikare biqelibe. Modela hînkirinê bi nirxên ronîker ên diyarkirî, ne pêşbînî. Nexşeya vê rûpelê Asyayê nîşan dide; model bi xwe bi cihekî ve ne girêdayî ye.
Kontrol
Xwendin
| Sal | Zextê | Kapasîte | Hatî dîtin |
|---|---|---|---|
| 0 | 20.0 | 50.0 | 20.0 |
| 4 | 23.3 | 44.9 | 21.2 |
| 8 | 27.2 | 42.2 | 24.0 |
| 12 | 31.7 | 42.3 | 27.7 |
| 16 | 36.8 | 45.5 | 32.2 |
| 20 | 42.3 | 51.5 | 37.2 |
| 24 | 47.9 | 60.3 | 42.6 |
| 28 | 53.2 | 71.3 | 48.0 |
| 32 | 57.8 | 84.3 | 53.1 |
| 36 | 66.4 | 98.4 | 58.4 |
| 40 | 82.7 | 115.9 | 69.7 |
| 44 | 97.8 | 139.7 | 83.8 |
| 48 | 109.1 | 169.4 | 97.3 |
No observed data enters this model: it runs on the teaching values set by the controls, to be replaced with a programme’s own evidence.
Li seranserê şeş stûnan, bi pêşengiya Nexus Consortium
Assembled from the Nexus Standards area profile Xetera cîhanî û xetera pergalî: the hazards it names, the pergalan and sectors that carry the loss, the controls that dampen it and the data that observe it. Choose the components, pick an initiating hazard and step through the cascade. The Map view places the run on an example geography with open data. Every coupling weight is a stated assumption you can change. A teaching model, not a forecast, an assessment or a certification. To model a place of your own choosing, open the full System Builder.
Metirsî
Pergal û girêdan
Kontrol
NS-0 Destûr û prensîbNS-3 UNIyên tomara xetereyê (rêzimanî, nexşeya veguhastina ji pergala kevin, desthilata veqetandinê)NS-9 UNI yên çarçoveyî (belavkirin, mînak, mînakên bernameyê)NS-10 Policies and clauses (machine-readable obligations: definition, binding, evaluation and enforcement)NS-11 Piştrastkirin û çavdêrî (delîl, erêkirin, çavdêriya lihevhatina zero-trust)NS-14 Lihevhatin û nexşeya li standardên derveyîNRS-H120 Malbata metirsiyê: Nazikiya avahîsaziyî ya pergalên bi hev ve girêdayî (NHS-1 sys.fragility)NRS-C6 Xetera pergalî û zincîrîNRS-H61 Malbata metirsiyê: Têkçûna zincîrî (NHS-1 sys.cascade)NRS-H62 Malbata metirsiyê: Bûyerên tevhev û pir-metirsî (NHS-1 sys.compound)NRS-H94 Malbata metirsiyê: Bûyerên sîber ên pergalî (NHS-1 cyber.systemic-cyber)NRS-H60 Malbata metirsiyê: Qutbûna zincîra dabînkirinê û herikînan (NHS-1 sys.supply-chain)Çavdêrî
Erdnîgariya mînakê
Binesaziya girîng stewards reliability and resilience engineering for the Consortium and reviews how it is applied across platforms.
Model, texmînên wî, daneyên wî û nediyariya wî, bi şeweyê ku zanyar an endezyar kontrol bike. Avahî rêbazên weşandî dişopînin. Nirxên hatine xêzkirin nimûneyî ne, ne encam in.
The model structure used for reliability and resilience engineering, the assumptions it makes and how each is tested.
Ri = f(Hi, Ei, Vi, Ci)metirsî, rûbirûbûn, lawazî û kapasîteya serederiyêEAL = ∑k pk · Lkli ser bûyerên k bi îhtîmala salane pkxt+1 = A xt + B ut + εtA carries the couplings, u the shock, ε the error| Texmîn | Çima tê çêkirin | Çawa tê ceribandin |
|---|---|---|
| Metirsî û rûbirûbûn di nav bûyerekê de serbixwe ne | Entegrala windahiyê ji hesabkirinê re maqûl dihêle | Bi lihevhatineke copula li ser tomarên hevbeş re bidin ber hev |
| Girêdan li nêzî xala xebatê xêzik in | Dihêle şok di A de belav bibin | Ji derveyî rêza xêzik tevlihev bike û bide ber hev |
| Xêzên lawaziyê di navbera cihan de têne veguhastin | Xêzikên herêmî kêm tên dîtin | Li hember windahiyên çavdêrîkirî erê bike li cihê ku hene |
rêzeya Pergalên Stratejîk is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.
Tu carî daneyên şexsî, hûrgiliyên binesaza hesas an tiştekî ku mafê we yê parvekirinê tune ne neşînin. Beşdarî berî bikaranînê tê nirxandin; şandina wê nivîskarî an mafên edîtorî nade û sponsorî tu carî encamekê nakire.
Agahî û pirs îro vekirî ne. Pirsek referansekê distîne û gava piştî wê dide nasîn; serlêdan, drav, veqetandina hesabkirinê û tomarkirin tenê dema ku tîm, mercên wê û kapasîteya vekolînê hebin vedibin.
Nexşe, dane û jimarên vê malperê ji bo çarçoveyê û agahiyên giştî têne nîşandan. Ew ne şîret, ne pêşbînî û ne hişyarî ne; sînorên agahiyê di Daxuyaniyên Berpirsiyariyê û Daxuyaniyên Daneyê de hatine diyarkirin.
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