this includes data mirroring to a named instance and clustering a named instance 這包括鏡像到命名實(shí)例和群集命名實(shí)例的數(shù)據(jù)。
first, if one of your disks fails, you still have the data mirrored on the remaining disks 第一,如果其中的一個(gè)損壞,您仍然有資料鏡像在其馀的磁碟上。
the concept of data mirror layer, with which original different databases firstly are converted to a standard database is introduced, and then, by trigger mechanic complicated online updating can be realized 它通過引入數(shù)據(jù)鏡像層的概念,將原有的不同異構(gòu)數(shù)據(jù)庫數(shù)據(jù)通過inforeai轉(zhuǎn)換到一個(gè)標(biāo)準(zhǔn)數(shù)據(jù)庫平臺(tái)下,形成數(shù)據(jù)鏡像。