Starter Web Availability Fault Tolerance


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I'm now working for a startup out of Boston and we're in discussions about server availability so that we can sustain outages for like 4 hours, and also handle higher web traffic. What is a starter web availability system that you would recommend, and is there anything "canned" out there that makes this easier to setup and test? We want to get this going separately like a lab, and then when it all works, we start doing limited cutover testing to see if we can move to this.
Currently we spend around $2500 per day in advertising, and have a $20 transaction coming across our single server every minute to 3 minutes, sometimes even triple that.
Note -- I love cPanel, and hav

Related to : Starter Web Availability Fault Tolerance
Starter Web Availability Fault Tolerance
Linux
I'm now working for a startup out of Boston and we're in discussions about server availability so that we can sustain outages for like 4 hours, and also handle higher web traffic. What is a starter web availability system that you would recommend, and is there anything "canned" out there that makes this easier to setup and test? We want to get this going separately like a lab, and then when it all works, we start doing limited cutover testing to see if we can move to this.
Currently we spend around $2500 per day in advertising, and have a $20 transaction coming across our single server every minute to 3 minutes, sometimes even triple that.
Note -- I love cPanel, and hav
AceMesh announces High Availability, Fault-Tolerance and Linear Scalability Services
Linux
AceMesh announces affordable solutions and services for customers seeking high availability, fault-tolerance and scalability.
AceMesh offers DRBD in combination with Corosync Cluster Engine for customers. This allows customers to start with at least two servers with one server acting as primary database and both servers acting as web servers. When the primary server for database is down, corosync cluster engine will automatically mount and start all necessary services on the secondary, which usually takes a few seconds. With DRBD, you can run any popular database ( MySQL, PostgreSQL) and achieve fault-tolerance and high availability for your websites on Joomla, Wordpre
Managed Dedicated Servers: High Availability, Fault Tolerance & Linear Scalability !
Linux
Managed Dedicated Servers: High Availability, Fault Tolerance & Linear Scalability with DNS Fail-over support.
AceMesh Provides multiple options to achieve high-availability infrastructure for your business. This includes DRBD clusters as well as Cassandra Clusters, as well as using cloud technologies.
Even if you do not need high-availability right now, but looking for affordable managed servers with the best price/performance ratio to start with, we present the best deals suitable for your budget.
For high availability, fault tolerance & linear scalability, we will setup DRBD based clustering as well as cassandra based clustering on
High Availability, Fault Tolerance & Linear Scalability with DNS Fail-over support
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Managed Dedicated Servers: High Availability, Fault Tolerance & Linear Scalability with DNS Fail-over support.
AceMesh Provides multiple options to achieve high-availability infrastructure for your business. This includes DRBD clusters as well as Cassandra Clusters, as well as using cloud technologies.
Even if you do not need high-availability right now, but looking for affordable managed servers with the best price/performance ratio to start with, we present the best deals suitable for your budget.
For high availability, fault tolerance & linear scalability, we will setup DRBD based clustering as well as cassandra based clustering on
Managed Dedicated Servers: High Availability, Fault Tolerance & Linear Scalability !!
Linux
Managed Dedicated Servers: High Availability, Fault Tolerance & Linear Scalability with DNS Fail-over support.
AceMesh Provides multiple options to achieve high-availability infrastructure for your business. This includes DRBD clusters as well as Cassandra Clusters, as well as using cloud technologies.
Even if you do not need high-availability right now, but looking for affordable managed servers with the best price/performance ratio to start with, we present the best deals suitable for your budget.
For high availability, fault tolerance & linear scalability, we will setup DRBD based clustering as well as cassandra based clustering on
vSphere High Availability, Fault Tolerance and Snapshots
Linux

I've heard claims from a vSphere server administrator that VMs configured for high availability continue to transparently function even in the event of an ESXi host failure. He also claims VMs configured for high availability cannot be snapshoted because that causes VM corruption.

To the best of my understanding, and from what I found online that's not true.

  1. HA (high availability) VMs are restarted on failure, they don't transparently continue to function.
  2. FT (fault tolerant) VMs transparently continue to function.
  3. You can snapshot an HA VM but not an FT VM.

So, I'm a bit confused. What exactly are the benefits and limitations of HA and FT?



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