AA AP ALUA 阵列的区别?

sqmax

原帖由 klin121628 于 2009-11-10 17:31 发表


2个控制器可以做LB，可以同时读写同一个LUN，怎么不能算AA？

可以同时读写同一个LUN？

冬瓜头

是的，双控同时对lun操作，每个写操作都向对方镜像，可以实现按照负载智能分流。

klin121628

原帖由 sqmax 于 2009-11-11 20:07 发表

可以同时读写同一个LUN？

AMS2000是中端模块化存储里面唯一做到控制器在LUN级别做AA而不是AP的产品，其他不管哪家都得给LUN指定owner（或者其他名字，比如prefered controller之类）

xingbudeye

回复 1# subcase


    TPGS standard provides a standard way of identifying the current state (active/optimized, active/unoptimized, standby, unavailable) of an array storage processor for a particular LUN. Depending on the state of the various storage processors for a given LUN we can have different behaviour for device paths corresponding to a given LUN.

If all the storage processors are in active/optimized state then the we have A/A behaviour
If one of the storage processor is active/optimized and other is active unoptimized then we have A/A-A behaviour
If one of the storage processor is active/optimized and other is standby then we have A/P[F] behaviour

xingbudeye

回复 5# subcase


    并不是真正的AA

today0916

请问EMC VNX2 5600是AA的吗？