2
votes
4answers
385 views

new hyper V High Avaliability setup and SMB 3.0 storage

I am looking at building an new 2012 R2 with Hyper V setup, everything has to be HP hardware. 2x HyperV 2012 R2 servers running 20-30 VMs. These will be dual 6 core xeons with 128gb of ram. 2x 2012 ...
3
votes
1answer
484 views

SonicWALL HA w/ Dual WAN HSRP from two redundant switches

We're adding two SonicWALL NSA 2600 firewalls to our current setup. We currently get two WAN connections from two separate Cisco routers running on the same external subnet with what I believe is ...
4
votes
3answers
909 views

Is round-robin DNS a possible solution for high availability?

Let's say I have 2 IPs for a given domain (round-robin DNS). If one the IPs becomes unresponsive, will clients try to connect to the other IP? or they will just fail to establish comunication with the ...
1
vote
1answer
158 views

Redundant web static content storage - what technologies? (small scale) [closed]

Current situation of our static web servers: 2x 2U servers full of SSDs (raid5) for storing data data are written to them only through our applications (*) huge amount of small image files (one ...
2
votes
1answer
205 views

Simple redundancy setup using two servers in two different datacenters? [closed]

Scope of the question This question is solely about getting a client requesting a domain: example.com to one of the two available servers. How it is handled from there on, is another problem to solve ...
0
votes
1answer
115 views

Setting up apache + mysql + exim on new servers. Redundancy/HA/Failover?

We are currently moving our single Linux server to a few other physical Linux servers, and would like to take the opportunity to have some more failover options. Backups are fine, and we don't ...
0
votes
1answer
209 views

How to setup a failover solution for Windows 2003 SMTP Server?

I'm currently running Windows SMTP Server on a rented Windows 2003 Server VM. There are times when my hosting company network is down and my clients can't send their emails via the SMTP Server host I ...
4
votes
3answers
203 views

Should redundant servers have exactly the same configuration, or slightly different?

If you provide a service on two servers to ensure high-availability, is it better to configure them in exactly the same way, of instead should you introduce slight differences to prevent "freak ...
0
votes
1answer
72 views

Redundance for different processes running on the same server

We have a system consisting of different components/services like database, webserver, fileshare, some self programmed daemons, etc. We now have the requirement to make all components/services ...
11
votes
8answers
3k views

Load balancing Apache on a budget?

I am trying to get my head around the concept of load balancing to ensure availability and redundancy to keep users happy when things go wrong, rather than load balancing for the sake of offering ...
0
votes
2answers
55 views

mysql redundancy with mixed storage types

Looking at building redundancy into our system, as we are currently, um, exposed should anything blow up. We have a large-ish DB (150G), consisting of a mix of innoDB and myISAM table types. We want ...
1
vote
2answers
108 views

need scalable, highly available transactional log server

My requirements: 1) must be able to continue operating after node failure 2) logs must be recoverable after node failure - no data loss 3) must be able to scale out 4) must be transactional - when a ...
0
votes
2answers
524 views

HAProxy to the rescue? (multiple machines w. vhosts)

This is more of a 'best practice' or 'input appreciated' question. Currently we manage about 5 webservers (in two DC's) that run Nginx for PHP websites. The plan is to redesign the setup so it is ...
5
votes
4answers
2k views

Providing high availability and failover using MySQL on EC2

I would like to have a highly-available MySQL system, with automatic failover, running on Amazon EC2 instances. The standard approach to solving this is problem Heartbeat + DRBD, but I've found a lot ...
0
votes
2answers
230 views

How common is it to use additional dedicated servers for redundancy?

I'm new to handling the infrastructure for production service deployments. My intuition tells me that if I want to have my service be "up" as much as possible and yet can only afford say 2 dedicated ...
2
votes
2answers
438 views

tools for geographical redundancy

I'm writing a spec for a high availability application. I need a low budget solution to be able to failover between two data centers. Replicating databases and content I'll be able to manage solutions ...
0
votes
2answers
380 views

Can you recommend a failover solution for setups running multiple VPSes?

Here's what I have to work with: Root access to VPSes with different hosting companies that run CentOS only Two dedicated nameservers with over 100 zone entries Several webservers hosting the same ...
5
votes
3answers
533 views

SQL Server clustering options

Can anyone give an high-level overview of the options available for SQL Server clustering, their pros and cons? Is it better to use Microsoft Clustering services or SQL Server native clustering? Does ...