CONFIGURATION GUIDE
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NEC EXPRESS5800/R320c-M4 / Windows Server 2008 R2 model
NEC Corporation
Revision 3.1, June 2014
19
Notes for using Hyper-V
Brief system interruption during synchronization process
In the synchronization process of CPU modules, a memory copy is performed to duplex memory on both
CPU modules. Most of the memory area can be copied without interrupting the system through the
so-called brownout copy method, and just a small portion requires the system to stop. However, with
Hyper-V, the system cannot use the brownout copy method. Therefore, the system does not respond for a
longer period of time during the synchronization process of the CPU modules than without Hyper-V.
See the table below for the reference values of interruption during re-synchronization of CPU/IO modules in
a Hyper-V system. It is recommended that your system design take the interruption into account.
Model / Memory Size
8GB
16GB
64GB
128GB
256GB
R320c-E4
2 sec
3 sec
10 sec
18 sec
36 sec
R320c-M4
2 sec
3 sec
8 sec
14 sec
27 sec
About Guest OS
Guest operating systems supported on NEC Express5800/ft series are the same as other Express5800
Servers. The tables below show the supported guest OS.
For Windows Server 2008 R2 Hyper-V
OS
Edition
SP
Windows Server 2012 (x64)
*1
Standard / Datacenter
RTM
Windows Server 2008 R2 (x64)
Standard / Enterprise
RTM/SP1
Windows Server 2008 (x86/x64)
Standard / Enterprise
RTM/SP2
Windows Server 2003 R2 (x86/x64)
Standard / Enterprise
SP2
Windows Server 2003 (x86/x64)
Standard / Enterprise
SP2
Windows 2000
*2
Server / Advanced Server
SP4
*3
Windows 8 (x86/x64)
*1
Pro
RTM
Windows 7 (x86/x64)
Professional
RTM/SP1
Windows Vista (x86/x64)
Business
SP1/SP2
Windows XP (x64)
Professional
SP2
Windows XP (x86)
*2
Professional
SP2/SP3
SUSE Linux Enterprise Server 10 (x86/x64)
-
SP3
Red Hat Enterprise Linux 5.2 - 5.5 (x86/x64)
-
-
*1: KB2744129 must be applied on the host OS.
*2: Microsoft support has already ended since July 13, 2010.
*3: Must be installed with the sp4-applied media
