Difference between full width and half width Blade Servers by sja20118

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									Difference between full width and half width
Blade Servers in UCS

UCS B-Series blade servers come in two form factors: full width and half width.
Both of these types of blades are based on x86 architecture and come with
dual Intel Xeon 5500 series quad-core processors. These blades support DDR3
memory, up to two mezzanine cards and two optional hot-swappable SAS
hard drives in no RAID, RAID 0 or RAID 1 configuration. The supported DDR3
memory speeds are DDR3-800, DDR3-1066 and DDR3-1333(only on Xeon
X5570 processor). The chipset on the blades is provided by Intel and is based
on Tylersburg IOH (or the Northbridge) and ICH10 Southbridge. The Xeon 5500
series processors comes with integrated memory controller and thus removing
one of the processors from the blade reduces the total memory supported into
half. These blades also have an integrated internal BMC which provides control
and monitoring of the blade as well as local and remote access to Keyboard,
Video, Mouse and Media. The BMC also monitors the blade’s thermal information
from the processor, memory and the motherboard. The BIOS in the blades
is based on AMI Aptio EFI BIOS and provides features like processor settings,
memory settings, power management, managing boot devices, etc. The BMC
communicates with BIOS using IPMI.




B200 M1 half-width Blade Server Overview


The half width blade or the UCS B200 M1 Blade takes half slot in the UCS chassis and
supports up to 96 GB of DDR3 memory using 8 GB memory modules. It has 12 DDR3
DIMM slots which mean 6 DIMM slots per processor socket since the memory controller is
integrated with the processor. The half width blade supports only one mezzanine card for
all the I/O from the server blade. Depending on the type of the mezzanine card the system
will show two 10 Gb NICs (for UCS 82598KR-CI card) or two 10 Gb NICs and two HBAs (for
UCS M71KR-E/ UCS M71KR-Q card). Regardless of the type of the mezzanine card there
are two 10 Gb interfaces for connectivity to the outside and thus the total speed will be 20
Gb excluding any oversubscription.




Postings may contain unverified user-created content and change frequently. The content is provided as-is and
is not warrantied by Cisco.
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Difference between full width and half width Blade Servers in UCS


B250 M1 full-width Blade Server Overview


The full width blade or the UCS B250 M1 Extended Memory Blade takes a full slot in the
UCS chassis and supports up to 384 GB of DDR3 memory using 8 GB memory modules.
It has 48 DDR3 DIMM slots which mean 24 DIMM slots per processor socket since the
memory controller is integrated with the processor. The support for extra memory is
made possible by application of Cisco Extended memory technology which provides
connectivity for up to 64 GB per DDR3 channel. Instead of directly connecting one DDR3
channel to the memory controller, four DDR3 sub-channels are connected to the memory
controller indirectly. This extension is performed at the hardware level, and it is completely
transparent to the operating system and its applications. The full width blade supports up to
two mezzanine cards for carrying all the I/O from the server blade. Hence the total speed for
I/O will be 40 Gb excluding any oversubscription and the system will show four 10 Gb NICs
(for UCS 82598KR-CI card) or four 10 Gb NICs and four HBAs (for UCS M71KR-E/ UCS
M71KR-Q card).




Postings may contain unverified user-created content and change frequently. The content is provided as-is and
is not warrantied by Cisco.
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