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VPSfind.com
was designed to help you find the best Virtual Private Server
technology for your Web Hosting needs, this is not a "server consolidation
through virtualization" website. Though it mentions virtualization
technology that focuses on server consolidation such as VMware and Microsoft
Virtual Server, this site's main focus is on web hosting driven VPS technology such
as Virtuozzo and Xen, which we feel will power virtually all the technology
for the VPS Hosting industry in years to come. We will also discuss
popular automated control panels such as cPanel,
Plesk,
HSPcomplete and
DirectAdmin provided with most VPS
offerings today. VPS is the next logical and natural step when shared hosting
doesn't cut it, dedicated servers are mostly unmanaged, too complicated,
somewhat expensive and not scalable, on the other hand VPS generally are fully
managed, cost much less, usually have no setup fees, are backed up nightly and
run on very high-end servers with multiple redundancies built in to drastically
reduce failure points.
About Virtual Private Servers
VPS behave exactly as dedicated servers,
providing isolation and autonomy from other VPS on the same physical machine.
Think of a VPS as a "mini" dedicated server with dedicated resources that
include enterprise-class features. VPS accounts operate independently from each other, each having their own
operating system and application set. VPS also give customers a minimum
guarantee of server resources; such as bandwidth, memory, processor units, and
disk usage; so no other account cannot monopolize an entire server's
reliability. VPS are more secure because each server operates independently and
is completed isolated from other virtual private servers on the same physical
machine.
The Technology
There are a few different types of Virtual Server technology, the most
popular for the hosting industry is SWsoft's Virtuozzo, SWsoft is a
leader in hosting automation and enterprise server software. The company
develops the Virtuozzo technology and HSPcomplete hosting automation solution.
The only end-to-end solutions and services for hosting service providers,
SWsoft's products deliver solutions that power data center management and
provide excellent return on investment.
VMware is also popular, but is built
more for server consolidation rather then hosting. There are also other popular
open source technologies such as Xen, UML, FreeVPS, freeVSD, Linux-VServer, LVS and
OpenVZ. Of these the most popular are Xen
and it's commercial counterpart Xen Enterprise; and openVZ and it's commercial
counterpart Virtuozzo. FreeVPS is also somewhat popular among hosting companies
using H-Sphere, as it is managed and fully integrated into H-Sphere. Psoft owns
H-Sphere which is in turn owned by SSL giant Comodo. The one to look out for is Xen Enterprise as it enables enterprise-grade virtualization for a fraction of
the cost of competing technologies. In typical Microsoft fashion, Microsoft
bought it's virtual server technology from a company called Connectix in 2003
and re-branded it Microsoft Virtual Server, it is in direct competition with VMware. HP also has a technology called HP Virtual Server
Environment (HP
VSE).
Verio developed its own Virtual Server technology.
Not Quite VPS
There are a few other commercial software technologies that claim to be
virtual servers but are nothing more then "jail shell" with no use for
developers or customers who need true root access, they are Ensim and Sphera and are designed for mass hosting
and application deployment, with emphasis on SaaS (Software
as a Service).
Operating Systems
Most technologies listed above are
available in virtually all Operating system distributions, including
but not limited to Fedora Core, Red Hat Enterprise, Debian, Suse,
Ubuntu, Gentoo, Slackware, CentOS and Windows 2003 Server.
Control Panels
The most popular control panels offered
with VPS are cPanel, Plesk, HSPcomplete and DirectAdmin. cPanel & Plesk are by far
the most popular, with DirectAdmin in a strong third. SWsoft's
HSPcomplete can only be offered with Virtuozzo, and even then the
web host must run HSPcomplete on their backend in order for them to
offer it to end-users. Plesk runs on both Linux and Windows, while
the others only run on Linux.
Shared Hosting vs. VPS
In a shared hosting environment,
hundreds of accounts are on the same server and share the operating
system & server resources (such as database server, mail server, and
web server). While reliable and secure if properly setup, shared
hosting systems are still vulnerable to uneven resource distribution
and are at risk of having a service (such as web or mail service)
become unstable due to another client "abusing" or "over-using" the
shared hosting system's resources. Also if one client runs a
vulnerable script the entire server could be compromised allowing
the entire server to get hacked. VPS are more secure because
each server operates independently from each other and is
completed isolated from other virtual private servers on the
same physical machine, each having its own operating system and
application set.
VPS vs. Dedicated Servers
Unlike cheap unmanaged dedicated servers on the market which run single IDE (desktop) hard drives,
single processors, offer no backups and no RAID Disk redundancy;
Virtual Private Servers run on Enterprise Hardware with Dual Intel
Xeon / AMD Opteron processors, high performance SATA/SCSI hard
drives on full RAID, Registered DDR ECC Memory, include full nightly
backups and are fully managed with operating system, security and
control panel updates.
Virtuozzo/OpenVZ vs. Xen/Xen Enterprise
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