23. ༢୍䛾䝕䞊䝍䝉䞁䝍䛷䛾ᐇ
• ⮬ື䝣䜵䞊䝹䜸䞊䝞䞊
• 䝃䞊䝞㞀ᐖ䛻ᑐᛂྍ⬟
• 䝷䝑䜽㞀ᐖ䛻䜒ᑐᛂྍ⬟
• 䝺䝥䝸䜹䛾ᩘ䛜䝅䝇䝔䝮䛾
⪏ஂᛶ䛾䝺䝧䝹䜢ୖ䛢䜛
䝥䝷䜲䝬䝸 – A 䝥䝷䜲䝬䝸 – B 䝥䝷䜲䝬䝸 – C
䝉䜹䞁䝎䝸 – B 䝉䜹䞁䝎䝸 – A 䝉䜹䞁䝎䝸 – A
䝉䜹䞁䝎䝸 – C 䝉䜹䞁䝎䝸 – C 䝉䜹䞁䝎䝸 – B
24. 䜰䜽䝔䜱䝤/䝇䝍䞁䝗䝞䜲䝕䞊䝍䝉䞁䝍
䝥䝷䜲䝬䝸 – A 䝥䝷䜲䝬䝸 – B 䝥䝷䜲䝬䝸 – C
䝉䜹䞁䝎䝸 – B 䝉䜹䞁䝎䝸 – C 䝉䜹䞁䝎䝸 – A
䝕䞊䝍䝉䞁䝍䞊すᾏᓊ
䝉䜹䞁䝎䝸 – B 䝉䜹䞁䝎䝸 – C 䝉䜹䞁䝎䝸 – A
䝉䜹䞁䝎䝸 – A 䝉䜹䞁䝎䝸 – B 䝉䜹䞁䝎䝸 – C
䝕䞊䝍䝉䞁䝍䞊ᮾᾏᓊ
• 䝃䞊䝞㞀ᐖ䚸䝷䝑䜽㞀ᐖ䜈䛾⪏ஂᛶ
• ணഛ䠄䝇䝍䞁䝗䝞䜲䠅䝕䞊䝍䝉䞁䝍
25. 䜰䜽䝔䜱䝤/䝇䝍䞁䝗䝞䜲䝕䞊䝍䝉䞁䝍
Primary – A Primary – B Primary – C
Secondary – C Secondary – A Secondary – B
Data Center - West
Secondary – A Secondary – B Secondary – C
Secondary – B Secondary – C Secondary – A
Data Center - East
Arbiter – A Arbiter – B Arbiter – C
Data Center - Central
• Tolerates server, rack, data center failures, network
partitions