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3
votes
2answers
6k views

How does a SAN architecture work and more importantly scale?

I'm trying to understand some SAN infrastructure and I was hoping some of you with more experience than me could help me understand scaling with a SAN. Imagine that you have some computer servers ...
4
votes
6answers
647 views

Running background jobs In a clustered environment

I have an architecture question. In a clustered web app environment, I can think of three ways to deal with background jobs: have a dedicated machine run all the jobs, thus freeing the web servers ...
2
votes
1answer
415 views

CMS Architecture - Synchronizing Dev/Test/Staging environments

We have a code, content and DB flow that follows a typical pattern: Dev->Build->Staging->Prod The kicker is that the client is editing and publishing content only in Prod. So our current strategy ...
1
vote
3answers
2k views

Varnish/Nginx/Apache/APC/Memcached

I'm setting up a new web server and was wondering if the following is a valid stack: Varnish in front to cache and split traffic between nginx for static content and Apache with mod_php for dynamic ...
0
votes
2answers
366 views

Is it possible to set up multiple named instances running on a SQl Server 2008 R2 Active/Passive Cluster?

I'm trying to plan a SQL Server 2008 R2 2 node Active/Passive failover cluster. Is it possible to set up multiple named instances running on the cluster? e.g. sqlcluster sqlcluster\demo sqlcluster\...
0
votes
2answers
211 views

Memcached and Mysql architecture

Right now we have 2 servers. webserver + memcached mysql server the mysql server is a new and a strong server and it is not being utilized fully. I was debating if I should migrate the memcached ...
1
vote
3answers
955 views

Number of Physical NICs for ESXi Host or Am I Missing the Boat?

First, please excuse my ignorance on this topic. Until recently I had been blissfully ignorant of this field and only recently began to suspect that I'd need to become directly involved. In any case ...
0
votes
2answers
91 views

Server architecture for statistical analysis [closed]

I am currently standing before a decision on how to design a system that would handle computing of statistical data on the cloud. I would like to know what server structure should I use to be able to ...
2
votes
1answer
448 views

SQL Server 2000 HIGH CPU Usage with BusinessObjects reports (unsolvable?)

I have one of those weird questions, those ones that are nearly unsolvable (the only way to really solve them is to throw out the technology and buy new ones). I've had a number of experts (about 10 ...
3
votes
1answer
120 views

Installing Windows Server 2008 Once or XP three times?

I have an application which makes use of Outlook 2003, 2007 and 2010. This application performs some tasks requested by a user and then closes. I am going to be putting my application on a virtualised ...
1
vote
1answer
1k views

apache & mod_pagespeed + varnish question

I have the following architecture on the web layer. Varnish <-> Apache2 (mod_pagespeed <-> mod_jk) <-> Tomcat ^ ^ ^ | |...
3
votes
2answers
344 views

Too many data replication technologies in environment

It is possible to configure remote data replication at many layers of the storage stack. Some examples to explain what I mean by layers: Physical Volume Layer (TruCopy, SRDF/MirrorView, SnapMirror) ...
0
votes
1answer
125 views

How would an eight-core Pentium 4 compare with a Core 2 Duo? [closed]

Specifically, an eight-core "Paxville" Xeon system clocked at 3 GHz versus the Core 2 Duo system clocked at 2 GHz, ceteris paribus. This is assuming that the workload is effectively distributed ...
1
vote
1answer
366 views

Large-scale server architecture [closed]

Recently I am on project that would need large scalability. Now, my architecture consists of 4 servers - 1 load balancing server, 2 application servers and 1 database server. What are the best ...
4
votes
2answers
633 views

Google network architecture

I am aware that this question might be closed as "not a real question", "subjective" or even "argumentative". If this is a mistake, I am sorry. I am not good at all at networking but I'm trying to ...
0
votes
2answers
827 views

CDN architecture - best practises and designs

I am a developer for a website which is heavily reliant on static content such a pictures, videos etc. Our current setup is very simple, we basically have one server acting as our cdn which in turn ...
10
votes
3answers
511 views

Architecting network with 10 Mbps half duplex phone system

Current Configuration The diagram below shows our current network architecture. All connections are running at 100 Mbps full duplex with the exception of the TalkSwitch phone systems which run at 10 ...
0
votes
1answer
62 views

Optimal hosting of website and platform api on EC2

We intend to deploy a web site (based on Drupal) and the associated platform api on Amazon EC2. Would like to know what would be a better way to architect this solution w.r.t to instances (meaning ...
10
votes
3answers
8k views

Layer 4 vs Layer 7 Load Balancing

I am trying to decide between using a layer 4 load balancing solution for my datacenter or a layer 7 solution. Unfortunately (for my sanity, that is), my use case is simple enough that both solutions ...
2
votes
2answers
422 views

guidelines for large Unix data center setup?

Are there any blogs/ recommended readings on how to setup/configure/manage large ( 500 + ) unix servers in a single / multiple data center ? I am trying to understand best practices, network design ...
1
vote
2answers
127 views

Reverse Graphical network mapping architecture

Hi everyone i've got the issue to handle a network that has not documentation whatsoever but is there any tool or procedure in order to create the network architecture model, or i should do it node by ...
3
votes
2answers
2k views

Best Practice for deploying PHP on multiple servers

I'm currently deploying some PHP Zend applications on my servers and this is currently what I got. 1st Layer - Load-balancer + Http-cache. 2nd Layer - web-server (will have many more webservers in ...
1
vote
1answer
518 views

How to scale out image hosting/serving?

I asked this question on stackoverflow and it was suggested that I try it here: I'm building a website where users can upload photos and I'd also convert uploaded photos into thumbnails. Planning ...
4
votes
1answer
871 views

Colour Coding Convention for Server Architecture Block Diagram

Do any colour coding conventions exist for system architecture block diagrams? If not, who/what would be considered the de-facto standard? Is block diagram the correct terminology in this context? ...
0
votes
1answer
746 views

network architecture: inbound/outbound traffic from local to internet and vice versa

ive been reading about network architecture a bit, found an interesting paper from Sun Microsystems that, even though uses their hardware/software, gives a good idea about the basics of data center ...
1
vote
1answer
359 views

Federated Search vs Enterprise Search - How do you decide?

We're looking at our Enterprise Search Strategy (by "Enterprise" I mean business), and I'm putting togther a paper which includes the pros and cons of both. I'm wondering what would drive a decison ...
1
vote
1answer
73 views

Never losing data techniques

I asked this question on SO and it was suggested I ask it here, which makes sense. I'm curious about techniques used to build a system where ensuring that no data is lost is of the utmost priority. ...
3
votes
2answers
4k views

How to set up multiple web and database servers?

My websites have been growing in terms of traffic and the load on the mysql has been increasing. I wanted a solution that would help deal with the increased load on mysql (all queries already ...
5
votes
7answers
1k views

Optimizing performance across thousands of SQL Server databases

We are building an application where each client will have their own database. None of the databases are particularly large (20MB to 400MB each), but there will be ~5,000 to start and at any one time ...
1
vote
2answers
2k views

How to achieve the following RTO & RPO with logshipping only using SQL Server?

Trying to come up with viable backup restore & logshipping solution for achieving the following: 15 minutes Recovery Point Objective (no more than 15 minutes data loss at any time) 5 minutes ...
2
votes
8answers
1k views

How can 24X7 hours availability for an application be achieved?

I was asked this question in an interview: I have a sql server and an asp.net application. I want 24X7 hours availability for my application even if the server crashes. What are the different ways ...
0
votes
1answer
3k views

multiple webapps in tomcat — what is the optimal architecture?

I am maintaining a growing base of mainly Cocoon-2.1-based web applications [http://cocoon.apache.org/2.1/], deployed in a Tomcat servlet container [http://tomcat.apache.org/], and proxied with an ...
0
votes
1answer
277 views

What is the maximum number of rails instances a single 256 MB RAM rackspace cloud server can support?

I know it is a vague and ambiguous question. I want to know just out of curiosity. How many instances of a rails app can I host on server with 256 MB RAM [Cheapest option on Rackspace]? Assumptions ...
0
votes
1answer
136 views

What type of security problems are mitigated by this .NET architecture?

Given the following physical layout for a .NET web application: DB (sql server, windows) - No public route (no table access, only stored procs) Web Service DAL (iis, windows) - No public route (can ...
8
votes
7answers
6k views

Varnish -> Nginx -> Apache a good idea?

I'm thinking about the architecture for a new Webserver. Would having Varnish as a cache in front of Nginx as a reverse-proxy and serving static files in front of apache for all heavy lifting be a ...
0
votes
1answer
540 views

32bit vs 64bit guest VM and RAM usage

Why does a 32bit domU (Xen guest VM) use less RAM than a 64bit? Notes: The same software complied for a different arch(AMD64 vs. 686). Obviously this is Linux or BSD or something easily ported. Maybe ...
2
votes
3answers
141 views

Win 2008 single server development environment (architecture)

I have a few questions about a test development environment that I’m setting up on this server: Intel Core i7-920 Quadcode incl. Hyper Threading 8 GB DDR3 RAM (triple-channel) 2x 750 GB SATA-II (...
7
votes
11answers
378 views

Graphical MySQL tools

Are there any good graphical tools (preferably free) for navigating a MySQL database? I find myself doing a lot of the same SQL queries to look at data in the tables. I would imagine there's a GUI ...
1
vote
4answers
8k views

Installing a clean Python 2.6 on SuSE (SLES) 11 using system-wide libraries

I've spent most of the day on this, and it is driving me absolutely insane. On all other Unixes I've used, this is a walk in the park, but SLES 11 has me dumbfounded. I need to build Zope on SLES 11 ...
2
votes
1answer
196 views

IPC between multiple processes on multiple servers

Let's say you have 2 servers each with 8 CPU cores each. The servers each run 8 network services that each host an arbitrary number of long-lived TCP/IP client connections. Clients send messages ...
1
vote
1answer
1k views

Reverse Proxy failover scenarios?

I currently have 2 apache web-servers that run ldirectord/heartbeat to load balance between them. Whenever I reboot one of the web-servers, or take it down for maintenance, ldirectord automatically ...
1
vote
1answer
389 views

NFS to share FTP server storage

We use FTP server to distribute a lot of files.Hard links are used extensively as we have a lot of identical files named differently. We also have a secondary FTP/WWW server as failover for the ...
7
votes
2answers
391 views

Really clear introduction to Sharepoint architecture

I think I understand Sharepoint, but to be honest I don't know what I don't know. A link to some clear documentation would be helpful, or short of that, descriptions of what the following are: A ...
3
votes
2answers
683 views

What is your recommendation for a software load balancer or load sharer for the given case?

I have provisioned a server with 8 cores and plan on deploying a network service. For spreading out request load I'd like to run 8 instances of my service. Nothing shocking here. I do not have ...
1
vote
2answers
179 views

Sun 280R architecture

How do I find out which architecture my Sun 280R is based on (eg . 501-6485 or 501-6690 etc) The command arch returns "sun4". Im running Solaris 10 Thanks
2
votes
3answers
3k views

LINUX - how can I detect CPU architecture through terminal?

I have a machine on my network that I can only access through ssh, and I want to see if it'll support a 64-bit OS (currently running linux, but I don't know which). Any ideas how to accomplish this ...
1
vote
2answers
337 views

Which is better: one NFS mount point, or seven?

I have a server that has 7 large disks that are each shared out via NFS to our webserver. My question is: Would it be more efficient if I shared the parent directory so that there was only a single ...
0
votes
3answers
141 views

Web application and remote storage of files

I have a web application that can store lots and lots of files on the server. i.e. users upload data to it. The files are stored below a particular storage path. The web host will be an IBM xseries ...
1
vote
3answers
1k views

Why/When to have a separate media server for images, mp3s, flvs etc?

I worked on some websites where they have two servers: one dedicated for serving php web pages, and another dedicated for serving media such as images, flvs, mp3s etc..When you do a view source of a ...
3
votes
3answers
7k views

Why is my LAN saying “unidentified network”? (Help setting up server architecture)

as some of you may be aware, I'm currently involved in an on-going saga in getting our servers up and running. As pretty much a newb, I'm slowly making progress, but I've hit a stumbling block. Here'...