才高八斗科技 Bearspac Technology 雲端服務專家 VMWare虛擬化解決方案 | 才高八斗科技 Bearspac Technology 雲端服務專家

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伺服器虛擬化產品說明
VMware vSphere Esxi 為 VMware 虛擬化架構的基礎系統，主要功能將實體伺服器(Physical Server)透過VMware vSphere ESXi 的作業系統，賦予一個虛擬層(Hypervisor)，讓使用者可以於其上建置多台虛擬機械(virtual machine)，每一台虛擬機械都擁有獨立的作業系統環境，並透過虛擬層與實體設備 (CPU / RAM / Disk / 網路卡) 溝通，可有效提升硬體的使用率，提高設備投資的整體效益。

vSphere Esxi 架構圖

vSphere ESXi VM 容錯移轉(HA)
VMware vSphere ESXi 虛擬化架構，會將許多服務集中於實體伺服器上，因此有伺服器損毀時風險考量的疑慮，而VMware 發展出多種容錯機制，其中VM HA更可實現於實體伺服器發生損壞時，透由VMware架構的運作，將虛擬機械(VM)做自動遷移至正常的伺服器上繼續運作，可達到短時間快速恢復。
補充說明 : 完整的VMware vSphere架構建議採用至少三台實體主機，才能夠保有VMware完善的功能應用。

vSphere Esxi VM HA 架構圖