Unsere Server stehen in einem
sogenanannten Network Operation Center in den USA (Denver,
Colorado).
Wir mieten Platz, Transferkapazitäten und technische
Einrichtungen vom erstklassigen Verio NOC. Bitte beachten
Sie dass wir kein Wiederverkäufer (Reseller) von Verio
sind und in keiner anderen Weise mit Verio zu tun haben.
Dieses Network Operation Center
verfügt über...
...redundante unterbrechungsfreie Stromversorgungen
...mehrere redundante Stromgeneratoren
...Feuerüberwachung und -unterdrückung
...erhöhte Fußböden (Staub, Wasserschäden)
...HVAC
...Klimatisierung
...Feuchtigkeitskontrolle
...Sicherheitseinrichtungen
Netzverbindungen
2 OC-3's von Qwest verbunden zu
Verio Chicago und Verio Palo Alto
2 OC-12's von MCI als Ersatz für diese Verbindungen
Alles über 4 OC-192 Verbindungen, dadurch wird ein
Upgrade auf höhere Bandbreiten so stark vereinfacht
dass
bei erhöhtem Bandbreitenbedarf kurzfristig Kapazität
zugeschalten werden kann - keine monatelange Wartezeit!.
(Rest derzeit nur in Englisch!)
The data center has connections to many different Internet
backbones including UUNet, Sprint, Cable and Wireless, CRL,
Qwest, Exodus, Agis and Net Axs. We also have private and
direct peering DS3's set up between our location and that
of American Online and PSI-Net. The data center also operates
its own DS3 to Mae East to peer with many of the smaller
Tier One providers as well as operating another DS3 to the
ATM switch located there.
By connecting to multiple backbones, the data can be distributed
through many sources. This architectural design also means
that the network connections are not dependent upon any
single Internet backbone. Thus when problems occur, traffic
rerouting is automatic, thereby ensuring the integrity of
the network and continued access for our high-speed dedicated
server clients. This takes the term "multi-homing"
to a whole new level.
Presently bandwidth utilization is 25% during peak traffic
times. Therefore, the network is very flexible. If one of
the backbone connections experiences problems, the traffic
can simply be re-routed over other paths, thereby ensuring
that users receive fast access times to sites hosted on
our network.
In addition, the network runs Border Gate Protocol (BGP4).
BGP is used at a provider with more than one access point
to the Internet. It helps create a truly redundant network.
In fact, in an ideal situation, a lease line failure should
result in the BGP routing session to close on the bad leased
line and the router on a working circuit should then begin
to accept the additional traffic.
In other words, traffic from a down circuit is re-distributed
across other circuits, thereby maintaining network integrity.
Providers that are multi-homed and correctly setup can actually
be more reliable than a single backbone provider because
they have multiple paths to multiple providers
Internal Connectivity
A provider's local area network is not often enough being
seen as a point of latency. The two main sources of latency
for a full-time Internet connection are the user's local
area network and the Internet provider's local area network.
The local network is anchored by Cisco 5500 Series ether
switches and high-end Cisco routers (like a Cisco 7513).
This top-of-the-line network hardware ensures that data
requests get to their destination and back out of the network
as fast as possible. We use ether switches instead of hubs
because of their speed and their security capabilities.
Whereas only one computer plugged into a hub can talk at
one time, all the machines connected to a switch can talk
at the same time. This means more data can travel through
a switch and each server acts as its own node on the network.
Furthermore, since each servers is its own node on the network,
it is difficult for hackers to trace data packets with sensitive
information (i.e. passwords) to a particular server. Servers on the network
do not share a single path (T3). Instead, the servers are
connected into a high-speed ethernet switch. This switch
is connected to the core router at the data center. From
the core router, data is sent back to the end user across
the fastest available path. Whereas statically routing traffic
over one path creates a single point of failure, this distributed
architecture ensures that users can access data extremely
quickly and have multiple paths both into and out of our
network.
