R&M Data Center Handbook
R&M Data Center Handbook
R&M Data Center Handbook
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
www.datacenter.rdm.com<br />
Integrated Switching<br />
Blade servers are used in integrated switching. They consist of an housing with integrated plug-in cards for<br />
switches and servers. Cabling is usually reduced to FO backbone cabling, though this is not the case in the<br />
following configuration.<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
PATCH<br />
........<br />
Aggregation<br />
& Core<br />
SAN<br />
Application Server or Storage Library<br />
SAN Connection<br />
LAN Connection<br />
KVM Connection<br />
Uplink<br />
SAN Switch<br />
LAN Switch<br />
KVM Switch<br />
Integrated switching generally includes I/O consolidation as well, which means that communication with the SAN<br />
environment is implemented using FCoE (Fibre Channel over Ethernet).<br />
Pod Systems<br />
Pod systems are a group (12 to 24) of self-contained rack systems. They are highly optimized and efficiently constructed<br />
with regard to power consumption, cooling performance and cabling, so as to enable rapid replication. In<br />
addition, each pod system can be monitored and evaluated.<br />
Because of their modularity, pod systems can be put into use regardless of the size of the data center. In organizations<br />
that require a higher data center capacity, units are replicated onto one another as necessary until the required<br />
IT performance is achieved. In smaller pod systems, lab and data center capacities can be expanded in a<br />
standard manner, depending upon business development. In this way, the organization can react flexibly to<br />
acquisitions or other business expansions, corporate consolidations or other developments dictated by the market.<br />
Any consolidated solution must consider the “single point of failure” problem. This means that systems and their<br />
paths of communication should be laid out in a redundantly.<br />
Uplinks<br />
All terminal devices in the network are connected to ports on switches (previously hubs) which act as distribution<br />
centers and forward the data traffic to the next higher network level in the hierarchy (also see section 3.3). This<br />
means that the forwarding system must support some multiple of the data rates of the separately connected<br />
devices, so that the connection does not become a “bottleneck”. These connections, so-called uplinks, must<br />
therefore be designed to be high-performance. For example, if all subscribers at a 24-port switch want to transfer<br />
data at the same time at an unrestricted rate of 1 Gbit/s, the uplink must make at least 24 Gbits/s available.<br />
However, since this represents a theoretical assumption, a 10 Gbit/s connection which can transfer 20 Gbit/s in<br />
full-duplex operation would be used in practice in this case.<br />
Uplink ports can also be used as media converters (copper > glass) and can exist as permanently installed interfaces<br />
or be modular (free slot), which increases flexibility and scalability, since a wide range of interfaces are<br />
offered by most manufacturers (also see section 3.6.4).<br />
R&M <strong>Data</strong> <strong>Center</strong> <strong>Handbook</strong> V2.0 © 08/2011 Reichle & De-Massari AG Page 63 of 156
Change language