availability n. 1.有效,有益,可利用,可得到。 2.可得到的東西[人員]。 3.(候選人的)當(dāng)選可能性。 local availabilities 可從當(dāng)?shù)孬@得的東西。 the availability of a candidate 候選人的當(dāng)選可能性。
This provides high availability services in both products 這為這兩個(gè)產(chǎn)品提供了高可用性服務(wù)。
High-availability services 高可用服務(wù)
In theory, disaster tolerance technology includes heartbeat detection technology and many other technical means, such as two module backup, computer cluster, storage area network, etc . in computer systems, when human operation failure occurs, system error occurs, or even physical attack, lack of power, flood and other disaster occur, disaster tolerance technology can prevent system from losing data, meanwhile, provide high availability service 從范疇上講,容災(zāi)技術(shù)包括心跳檢測(cè)技術(shù)在內(nèi)的許多技術(shù)手段,如雙機(jī)熱備份,計(jì)算機(jī)集群,存儲(chǔ)區(qū)域網(wǎng)絡(luò)等。在計(jì)算機(jī)系統(tǒng)發(fā)生人為失誤,系統(tǒng)錯(cuò)誤,甚至受到外來(lái)打擊或者遭到停電,洪水等災(zāi)難性的破壞時(shí),容災(zāi)技術(shù)仍能使系統(tǒng)在少損失數(shù)據(jù)甚至不損失數(shù)據(jù)的情況下對(duì)外提供高可用不間斷或間斷時(shí)間很短的服務(wù)。
Then we turn to a production system which demands high availability service; design a disaster tolerance system for it . we use two-module technique, high availability clusters in lan for disaster tolerance, and use disaster tolerance center technique in wan . we describe the software and hardware architecture of the disaster tolerance system in detail, divide the whole system into subsystems, discuss the subsystem function and relationship between the subsystems, then design and analyze the disaster tolerance control center subsystem and state detection subsystem 接著針對(duì)某實(shí)際工程項(xiàng)目的生產(chǎn)系統(tǒng)對(duì)系統(tǒng)提供高可用性服務(wù)的需求,給出了一個(gè)在本地使用計(jì)算機(jī)高可用集群,雙機(jī)容錯(cuò)技術(shù),在異地使用遠(yuǎn)程容災(zāi)中心進(jìn)行容災(zāi)的容災(zāi)系統(tǒng)的設(shè)計(jì),討論了該容災(zāi)系統(tǒng)的軟硬件體系結(jié)構(gòu),子系統(tǒng)的劃分,各個(gè)子系統(tǒng)的功能及它們之間的關(guān)系,并對(duì)其中的容災(zāi)系統(tǒng)控制平臺(tái)和狀態(tài)檢測(cè)子系統(tǒng)進(jìn)行了詳細(xì)的設(shè)計(jì)與分析。