NEC R320A-E4 Notes for using Hyper-V, System halt Time when Duplexing CPU Module, 12GB, 24GB

Express5800/R320a-E4, R320b-M4(Windows2008 R2 model)

Notes for using Hyper-V

System halt Time when Duplexing CPU Module

In the synchronization process of CPU modules, a memory copy is performed to duplex memory on both CPU modules. Some part of memory area can be copied without stopping the system while the other part requires the system to stop. When using Hyper-V, the system cannot use the function to copy without stopping the system. Therefore, the system does not respond for a longer period of time during the synchronization process of CPU modules as compared to when Hyper-V is not used. The following are the reference values of each model.

Note:

1)Memory copy time depends on the memory size installed in the system.

2)When a large amount of memory is installed, non-responding time will be longer and the connection from a client may time out. Adjust the timeout values of TCP/IP, etc., on the client side as necessary.

Model / Memory size	4GB	12GB	24GB	48GB	96GB
R320a-E4	9 sec	29 sec	57 sec	113 sec	-
R320b-M4	4 sec	8 sec	15 sec	29 sec	57 sec

* Actual time may differ depending on the status of use.

About Guest OS

1.Guest Operating Systems supported on NEC Express5800/ft series are the same as other general purpose servers.

2.Windows Server 2008 R2 Enterprise licence includes the use right to run up to four additional virtual instances of Windows Server

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