Re: Anyone had IBM storage to mirror informix data experience?

On Feb 18, 1:59 am, "Neil Truby" <neil.tr...@ardenta.com> wrote: > <joecl...@gmail.com> wrote in message > > news:7ad9c6fb-f97d-41bd-9ea9-f98b92f09f89@r36g2000prf.googlegroups.com... > > > IBM storage reseller told me that use  two storage system can be > > separated at the distance of 5 kilometers. > > That is why I intend to use it for DR. > > I am wondering  If I use Volumn Copy and then  Diaster happen , all > > the data will be same as the before. > > Well, yes.  As long as you get your consistency group strategy correct.  Be > aware also of the enormous potential to screw up your Primary performance if > you get it wrong. > > > By the way, I don't like to consider HDR or ER to make a DR system. > > It make the whole DB system to create more failure point and more > > careful management. > > That's a bit harsh on HDR, which is pretty robust and reliable. I prefer the mixed mode for DR, the level zero were sincronized by Storage Layer (dont need backup and restore) and data replication by Log Shipping (RSS). The both features help each other.