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An Introduction to Tape Backup
If you run a small business, chances are you're saving important files to a server. But what happens when disaster strikes? How are you ensuring that your files won't be lost? Many people fail to realize that the loss of files could cripple their...

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Introduction Mission Critical Data is just what its name says: critical to the core functioning of an enterprise. Mission critical data must be available 24x7 and fully backed up for immediate recovery in the event of disaster....

Loans For Bad Debtors: Discarding Debt Disorganization To Recover Financial Growth
Debt disorganization can often lead you to challenges like being permanently tagged as bad debtor. Your personal economy has many repercussions of such a scenario, especially when you are trying to get through the market of debt. Loans for bad...

Nucleus Kernel for FAT and NTFS
Nucleus Technologies.com offers a complete range of data recovery software and utilities for various Platforms including Windows operating system and supports various file systems including FAT16, FAT32, NTFS, NTFS5, The Hard Drive Data Recovery...

Working from Home ... For Yourself or Someone Else?
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How Multiple Server Hosting impacts your website's uptime

Please consider the following article for your ezine,
ebook or web site. It is free to use as long as you
include the resource box at the end. It contains 792
words. If you use this article, please send a brief
message to let me know where it appeared.
info@irieisle-online.com

Article available for reprint:
godfreyh@irieisle-online.com
====================================================
Hosting of web sites has essentially become a commodity.
There is very little distinguishing one hosting company
from the next. Core plans and features are the same and
price is no longer a true determining feature. In fact,
choosing a host based on the cheapest price can be more
expensive in the long term with respect to reliability
issues and possible loss of sales as a result of website
downtime.

Selecting a host from the thousands of providers and
resellers can be a very daunting task, which may result
in a hit and miss approach. But although hosting may have
become a commodity, one distinguishing feature that you
must always look out for is reliability.

At the heart of any hosting company's reliability is
redundancy. This ensures that if a problem exists at one
point, there will be an alternative which ensures
continuity as seemlessly and transparently as possible.

Most hosts do employ redundant network connections. These
are the high speed pipes that route data from the server
to your web browser. But, redundant 'multiple web servers'
have been extremely rare and very expensive, requiring
costly routing equipment which has previously been used
only in mission critical applications of Fortune 500
companies.

However, a very neat but little known Domain Name
Server(DNS) feature called 'round robin' allows the
selection and provision of a particular IP address from a
'pool' of addresses when a DNS request arrives.

To understand what this has to do with server reliability
it's important to remember that the Domain Name Server
(DNS) database maps a host name to their IP address. So
instead of using a hard to remember series of numbers
(IP address) we just type in your web browser
www.yourdomain.com, to get to your website.

Now, typically it takes at at least 2 to 3 days to
propagate or ‘spread the word’ of your DNS info throughout
the internet. That's why when you register or transfer a
domain name it isn't immediately available to the person
browsing the web.

This delay has stymied the security benefits of hosting
your site on multiple servers, as your site would be down
for a couple of days if something went awry with one
server. You would have to change your DNS to reflect your
second server and wait days


before the change was picked
up in routers on the internet.

However, the round robin DNS strategy solves this
predicament, by mapping your domain name to more than
one IP address.

Select hosting companies now employ the DNS round robin
technique in conjunction with'failover monitoring'.

The DNS round robin failover monitoring process starts
by a web hosting company setting up your site on two or
more independent web servers (preferably with different
IP blocks assigned to them). Your domain name will
therefore have 2 or more IP Addresses assigned to it.

Then the failover monitor watches your web server(s)
by dispatching data to a URL you specify and looking for
particular text in the results. When the system detects
that one of your IP addresses is returning an error,
and the others aren't, it pulls that IP address out of the
list. The DNS then points your domain name to the working
IP address/s

If any of your IP's come back online they are restored
to the IP pool. This effectively and safely keeps your site
online – even if one of your web servers is down.

The average failure detection and recovery time with a
system like this can be as low as 15 minutes. This time
varies depending on the speed of your site and the nature
of the failure and also how long other ISP's cache (save)
your DNS information.

The time taken for other ISP's caching your information
can be manipulated in the failover monitor by lowering the
"time to live" (TTL) cache settings. These are the
settings that other ISP's will use to determine how long
to cache your DNS information.

Of course you must bear in mind the matter of how
frequently data is synchronized between your website's
servers. This will be the hosting company's
responsibility, and this may become complicated where
databases and user sessions are involved.

The very expensive hardware based failover monitoring
systems that point a virtual IP address to other ISP's,
while behind the scenes juggling a number of unique IP
addresses on different servers, is of course the most
'elegant' solution to multi server hosting.

That way, the whole issue of ISP's caching your
information does not come into play.

Therefore, for site's that need to have true 99.99995%
uptime, without huge outlays of money, the technology
is readily available and certain proprietory failure
monitoring systems are now relatively cheap to apply.

ABOUT THE AUTHOR
Godfrey Heron is the Website Manager of the Irieisle
Multiple Domain Hosting Services company.Signup for your
free trial, and host multiple web sites on one account:
http://www.irieisle-online.com


 

Data Recovery Software and Undelete from R-TT
Disk management software including utilities for data recovery, drive imaging, disk wiping and access control.
www.r-tt.com
 
Data Recovery | Email Data Recovery by Ontrack
Data recovery services, data recovery software, file repair software, and diagnostic software from Ontrack. Software for email recovery, file recovery and ...
www.ontrack.com
 
Data Recovery by DriveSavers | Hard Drive Data Recovery
Worldwide data recovery service for all operating systems and storage media. Authorized by all drive manufacturers.
www.drivesavers.com
 
Hard Drive Data Recovery Software Tools, Disk Recovery Utilities ...
Offers data recovery software,data recovery services for hard drive recovery and data safety software services for your computer. Buy award winning data ...
www.stellarinfo.com
 
Data Recovery by FADV – Hard Drive, RAID, Tape, Database and more ...
Offers data recovery services for all hard drive models. RAID, MS SQL, Exchange, Tapes, Camera and USB media, CD and DVD. Service available 24/7.
www.datarecovery.net
 
Data Recovery Software - File System Utilities
Data recovery software for all Windows file systems. Recover deleted files, corrupted hard drives, and partitions.
www.runtime.org
 
Professional Data Recovery Software from Bitmart. File Recovery ...
Data Recovery Software Restorer2000. Undelete & File Recovery utility for FAT and NTFS file systems. Data Recovery from damaged disks and partitions.
www.bitmart.net
 
Data Recovery Services - ActionFront - Critical Server Data Recovery
ISO certified data recovery services with labs in Atlanta, Santa Clara, Dallas, Chicago, Toronto (also Buffalo and Tokyo Japan)
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Hard Drive Data Recovery Software: Recover Deleted Files- Recover ...
Data recovery software for recovering files that have been deleted or lost due to the hard drive format, virus infection, unexpected system shutdown or ...
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Data Recovery Group - Hard Drive Data Recovery Services
Data Recovery is Our Only Business! Data Recovery Group's a complete data recovery service that specializes in recovering data from hard disk drives.
www.datarecoverygroup.com
 
Data Recovery by CBL: Hard Drive Recovery Services
Worldwide Data Recovery Services at CBL. Specializing in data recovery, hard drive recovery, hard disk drive recovery and RAID data recovery.
www.cbltech.com
 
Data Recovery Software, File Repair Utilities, Hard Disk Recovery ...
Hard drive data recovery software to perform data recovery & recover deleted files from Novell, Linux, Unix, Mac, Windows & data recovery services for hard ...
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AT&DR: Data Recovery and Liabillity
Associated Technologies offers complete data recovery solutions with services for any type of data storage device, including the following: hard drives, ...
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Ontrack UK - Data recovery services & recovery software - hard ...
Ontrack offers data recovery services & software for: hard drive recovery, file recovery, server recovery, email recovery, tape recovery, RAID recovery.
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Beginners Guides: Hard Drive Data Recovery - PCSTATS.com
Beginners Guides: Hard Drive Data Recovery - PCSTATS.com.
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File Recovery and Data Recovery Software. Hard Drive recovery utility
Data recovery software for FAT, NTFS, Ext2FS file systems. File recovery after FDISK, MBR destruction, FAT damaged, virus infection. Dynamic disk support.
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Data recovery - Wikipedia, the free encyclopedia
Data recovery is the process of salvaging data from damaged, failed, ... Although there is some confusion as to the term, data recovery can also be the ...
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Active@ UNDELETE Data Recovery. Recover Deleted Files. Windows XP ...
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Content Menu
  • 10 easy steps to speed up your computer without upgrading

  • 10 proven tips to survive a computer crash

  • 7 critical steps to protect your data

  • add value by documenting your business

  • an introduction to tape backup

  • an outsourcers passage to india how to do it part i

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  • asset searching for recovery actions the decision makers most critical tool part 1

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  • a customer complaint management system

  • a fresh start for family finances in 2005

  • background of password cracking

  • backing up your stuff part 2 a solution

  • before you take the plunge essential information on data recovery

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  • business continuity and disaster recovery business impact analysis

  • business continuity and disaster recovery reducing your risk profile

  • business continuity and disaster recovery risk analysis and control

  • business continuity and disaster recovery selecting a business continuity strategy

  • business continuity and disaster recovery the business continuity and disaster recovery plan

  • business continuity testing starts with the risks

  • business needs vs network performance critical challenges facing network managers

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  • career paths for a comptia a certified technician

  • career paths for comptia a certified technician

  • choosing a data recovery company

  • choosing data recovery company

  • common problems why hard disks crash

  • comparing data recovery software

  • compensating for disruptions in the oil and gas industry

  • computer data recovery options

  • computer disposal throwing away your computer money and idenity

  • computer viruses the basics

  • coping with a serious data loss from your computer hard drive

  • corporate information security is our information more secure since september 11th

  • datarecoverynet com enters medical industry

  • data backups are the biggest security threats

  • data backups are the biggest security threats surprised

  • data backups one key to business survival

  • data recovery

  • data recovery 1 on 1

  • data recovery and data loss a costly proposition

  • data recovery and data safety tips

  • data recovery beginners tips

  • data recovery for less

  • data recovery from laptops

  • data recovery made easy

  • data recovery software at your rescue

  • data recovery software comparison

  • data recovery the best method is prevention

  • data recovery the easy way

  • data recovery what not to do

  • data recovery what you need

  • data recovery you can get it back

  • data security are your assets secure

  • dealing with your pending pc disaster a guide for small business

  • did you ever want to completely erase everything on your computer

  • dirty little computer viruses and how to protect yourself

  • disaster planning ­v how important is it to you

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  • how multiple server hosting impacts your websites uptime

  • how multiple server hosting impacts your website s uptime

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  • intranet

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