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Co-located Hosting Guide
What is
Co-location?
In general, collocation is moving or placing things together,
sometimes implying a proper order. On the Internet, this term (often spelled "colocation"
or "co-location") is used to mean the provision of space for a customer's
telecommunications equipment on the service provider's premises. For example, a
Web site owner could place the site's own computer servers on the premises of the Internet service provider (ISP) who provides
co-location hosting services.
Who needs Co-location hosting?
Customers who
have full control over all aspects of their website and the way it operates are
best suited for dedicated hosting. Those customers who want to supply the hardware, or want the ability at any time to remove
their server, or move it to another location are suited for
internal hosting, meaning they host the websites themselves and pay for the
internet connectivity and networking needs. Those customers who meet the above
requirements, but aren’t able to host their website themselves are suited for
co-location hosting.
Who
actually supplies the server?
When using co-location providers, the server actually belongs to
you, the customer. Normally, this entails a server being completely configured
and loaded with information, being delivered to the co-location provider ready
to go. That being said, some co-location providers offer programs where you can
purchase a server, or even have one custom made through them.
Will a co-location provider make sure my machine stays
online?
That depends on your
provider. Co-location providers typically offer Server Monitoring contracts,
which make them responsible for watching your system and making sure it is
running properly, within their power, of course. If you have a custom written
application on your server and it is causing problems with the operation of your
server, it will be your responsibility to fix it.
If something goes wrong with my server hardware, who fixes it
That again depends on the
agreement you have with your co-location provider. Most providers offer Hardware
Support contracts, which make them responsible for keeping your machines
operating mechanically. If you supply your own computer, and would like to have
spare parts on site, you will typically need to purchase the parts in advance
and supply them to your provider. For a computer purchased through the provider,
they will normally have spare parts on hand, and/or a relationship with the
hardware provider that supplied the hardware itself. Even though your provider
fixes your machines, you will still be responsible for the cost of the
associated parts. Now, if you do not have a hardware agreement with your
provider, you can either pay them to diagnose and repair the problem, or send
your own technician to their hosting facilities for the same purpose.
Is
there a limit to the size of my server?
There are limitations and pricing differences in relation to the
size of your server(s). For example, rack mount servers come in several sizes
depending on the manufacturer and the hardware contained within. A 1U server is
half the size of a 2U server; hence it takes up less physical space in a rack,
leaving room for more servers. As such, 1U servers are less expensive to
co-locate than 2U servers. Mid tower and Full tower cases have similar
limitations as well. Some providers only have facilities for rack mount servers,
while others provide areas for tower boxes as well.
What things do I need to take into consideration when selecting a
provider?
Selecting a
co-location provider can be a somewhat complicated process. When selecting a
provider, there are several key areas that you will need to take into
consideration to make the best choice possible.
• Bandwidth – What are the
tiers of bandwidth available, and what does it cost if you exceed your limit for
the month.
• Rack Space – What are the price differences, based on the size
of server you want to place at the provider? There are several types and sizes
available, and most providers charge different amounts for each.
• Hardware
Support – Does the provider offer Hardware Support contracts? If so, how quickly
is the turn around for a hardware repair, and are parts available on-hand or do
they need to be shipped? If the provider does not offer Hardware Support
contracts, or you do not wish to utilize them, then what methods are available
to repair a down server? Do they offer services to diagnose and repair issues
for a fee, or allow a technician of your choosing access to the servers?
•
Internet Connectivity – What size connection does the provider have to the
Internet? How many connections do they have, in the case of a failure?
•
Uptime – What kind of Uptime does the provider guarantee for your presence on
the Internet?
• Server Monitoring – Does the provider offer Server
Monitoring services, to ensure that your system is running and operational at
all times?
• Static IP Addresses – How many IP Addresses will the provider
allocate to your servers, and what is the cost of obtaining more, when needed?
• Backup Services – What level of data backups are included, if any? What
additional levels of data backups are available, at what intervals, and at what
cost?
Glossary of terms:
1U, 2U, etc.
This
number represents the actual size of a rack mount server in “rack units”. 1U is
the standardized size of a rack mount server. A 2U server takes as much space as
2 1U servers, and a 3.5U server would take the space of 3 and a half 1U servers.
Server racks have a finite amount of space available, which is normally measured
using “rack unit” dimensions.
Bandwidth
Bandwidth has a general meaning of how much information can be carried in a
given time period (usually a second) over a wired or wireless communications
link.
Dedicated hosting
The Dedicated Hosting environment provides an exclusive server or servers
devoted solely to your web site. You do not share a server with other customers,
as with shared hosting.
IP Address
In the
most widely installed level of the Internet Protocol (IP) today, an IP address
is a 32-bit number that identifies each sender or receiver of information that
is sent in packets across the Internet.
Rack mount
Much professional
video, audio, and computer equipment can be mounted in standardized 19" racks.
Rack dimensions are often given in "rack units."
Uptime & Downtime
Uptime is a
computer industry term for the time during which a computer is operational.
Downtime is the time when it isn't operational. Uptime is sometimes measured in
terms of a percentile. For example, one standard for uptime that is sometimes
discussed is a goal called five 9s - that is, a computer that is operational
99.999 percent of the time.
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