800xA SV 5.1 with mixed 32/64 bit OS
Are there any experiences with mixed operating systems on Clients. Because it is not so easy to buy new suitable Rack Hardware for 32Bit Operating systems. I used a Dell R7190 as a Client with Win7 32bit with 4GB RAM. Now the hardware
reserves 2.1 GB!!! RAM and the Rest 1.9 GB is not.enough. Thats why I want to use 64 bit OS to have the possibility to use more RAM.
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As Harsha wrote, starting with 5.1 Revision B (and 5.1 Feature Pack 2) it is permitted to freely mix 32 and 64 bit operating systems.
The reason is that starting with these versions, one common media was used independent of 32 or 64 bit operating system.
A 64-bit computer will hence run exactly the same binaries as the 32-bit equivalent with the difference of being able to make use of more than 3.5 GB of RAM. Hence, you shold not notice any difference between 32 and 64 OS apart from the obvious.
The workplace process (AfwWorkplaceApplication.exe) may need up to 1.5 GB of virtual memory on 32-bit (the remaining 500 MB up to the 2.0 GB boundary by 32-bit OS is not to be used). A 32-bit workplace using using more than 1.5 GB should be restarted. On 64-bit the limit is close to 3 GB.
Memory measurements should be carried out with the Windows Performance Monitor, not Task Manager. Memory usage is heavily coupled to the density of the process graphics and the number of monitors the workplace is spanning. At some point, you must replace 32-bit clients with 64-bit machines. Large/complex configurations may not even be suitable for a 32-bit client.
System till 5.1 rev A it has separate DVD box for 32 and 64 bit OS but where as for
System 800xA 5.1 Rev B onwords including FP it includes single media which supports both 32 and 64 bit OS.
Now For your Que:
You can mix the 32 bit and 64 bit OS in same system but only forword path is allowed(32->64 bit) but not reverse.
so whenever you add/change the client machine you can easily upgrade to 64 bit OS even though remaining system running in 32 bit OS.
In addition to the previous answers, I'd like to remark that ABB 800xA supported hardware (like for example a client) can be found on a special "Certified 3rd party products" website (see below).
Here you can not only find suported client workstations, but also servers and network devices like switches, routers and so on.