Restrictions Of The Numbers Of Nic Ports Assignment For Windows - Hitachi Compute Blade 500 Series User Manual

Restrictions of the numbers of NIC ports assignment for Windows

• When using Windows, there are restrictions in the maximum number of
the ports which can be assigned to one LPAR. When exceeding the
limitation, the following phenomena may occur.
– OS installation may fail or take so much time.
– Temporary link-down may occur during OS operation.
[Windows Server 2008, Windows Server 2008 R2]
• Up to eight ports can be assigned per core.
• However, in case of Emulex 10Gb mezzanine LAN card, 4 times as many
CPU resources are consumed per single port, as compared with other
cards. When assigning ports of "Emulex 10Gb mezzanine LAN card",
count one port as four ports.
• The relation between the number of processors and the maximum
number of card ports which can be assigned is shown below.
Table 10-8 Relation between the number of CPUs and the number of card
ports (in case of Windows Server 2008, Windows Server 2008 R2)
Number of processors
Hyper-
Threading is
Disable
(Number of
cores)
1
2
3
4
5 or more
Notes:
1 One port uses the CPU resource for four ports.
.
Hitachi Compute Blade 500 Series Logical partitioning manager User's Guide
per LPAR
Hyper-
Threading is
Enable
(Number of
threads)
1 to 2
3 to 4
5 to 6
7 to 8
9 or more
Notes
Number of ports which can
Maximum number
Dedicated
of ports
8 -
2
16 -
2
4
24 -
2
4
6
32 -
2-4
6
No limitation
be assigned
Shared NIC
NIC
Virtual NIC
(Emulex
VF NIC
1
10Gb)
8
-
16
8
-
16
16
8
-
16
16
8
10-13