[Linux-cluster] WebFarm using RedHat cluster suite ?

[FM]

First, Thank you all for the great input !
Here is more output about our sites :
Some static HTML web site. Sites are generated in Lan and then rsync to DMZ.
And other with mod_perl + Postgresql Database (local)
One of our most visited site (static html) is using nealy 200 GB of 
bandwidth / month
and have 545368 hists a day.
For decembre 2005 stats  :
http://stats.lexum.umontreal.ca/awstats.pl?month=12&year=2005&output=main&config=www.canlii.org&lang=en&framename=index

Now we are using dual Xeon (2 Ghz), with 2,5 GB of RAM. with RAID 5 SCSI 
10KRPM
Network is GB
Budget is 200K CA$

Thanks again

Eric Anderson wrote:

> Marc Grimme wrote:
>
>> Hello,
>> I think the best way to tell what storage or infrastructure would be 
>> the best is to know more about your current setup and what issues 
>> with that you want to get ahead of.
>> For example: if you really think about using iscsi, I don't think 
>> that SCSI or SATA drives make a big difference - depending on how 
>> many drives you use. But if all webservers currently have locally 
>> attached disk drives you want scale too linar with exchanging and 
>> IDE/parallel-SCSI Bus with an network topology using Ethernet. But my 
>> opinion is: if you have a lot of I/Os make yourself mostly 
>> independent from the latency of an ethernet and rethink about using 
>> Fibre-Channel with GFS.
>>   
>
>
> Honestly, ethernet latencies (especially on gigabit ethernet) are 
> lower than fiber channel latencies, so this statement doesn't really 
> hold up.
> If you want very fast speeds, get an iSCSI array, populate it with 15k 
> RPM scsi disks with big caches, max the cache out on the array, and 
> set it up for a RAID0+1 (or RAID10 depending on the implementor).  If 
> you want fast speed, but not a big price, you can notch down to 10K 
> scsi disks, or use 15k scsi disks and a raid 5, etc, and keep notching 
> down until it fits your budget and needs.
> I agree here though that we really need to know a few things:
>
> - what kind of traffic is this?
> - size of the files most commonly used
> - total data size (how much space you need)
> - budget
> - demands (availability/performance/etc)
>
> Eric
>
>
>
>
>
>> But the best advices could be made if you make your current setup and 
>> the things you want to achieve more clearly.
>>
>> Regards Marc.
>>
>> On Wednesday 18 January 2006 22:01, FM wrote:
>>  
>>
>>> Thanks for the reply,
>>> I read about SATA storage but we sync from lan to dmz, so there is lots
>>> of r/w.
>>>
>>> Michael Will wrote:
>>>    
>>>
>>>> I am surprised you use SCSI drives on the storage if
>>>> you are price sensitive, usually SATA is the better
>>>> bang for the buck unless you are doing databases with
>>>> lots of small read and writes.
>>>>
>>>> Michael
>>>>
>>>> -----Original Message-----
>>>> From: linux-cluster-bounces at redhat.com
>>>> [mailto:linux-cluster-bounces at redhat.com] On Behalf Of FM
>>>> Sent: Wednesday, January 18, 2006 12:34 PM
>>>> To: Redhat Cluster
>>>> Subject: [Linux-cluster] WebFarm using RedHat cluster suite ?
>>>>
>>>> Hello everybody,
>>>>
>>>> Is redhat cluster suite (RHEL 4 ) a good candidate for a webfarm ?
>>>> My setup would be : several servers (1U AMd dual core) connected to
>>>> iscsi storage array.
>>>>
>>>> Is Iscsi a good choice (SAN prices are too high for us) for hardware ?
>>>> Our network is GB.
>>>> We will have SCSI 10KRPM + read and write cache on the SCSI card + 
>>>> RAID5
>>>> thanks !
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> -- 
>>>> Linux-cluster mailing list
>>>> Linux-cluster at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/linux-cluster
>>>>
>>>> -- 
>>>> Linux-cluster mailing list
>>>> Linux-cluster at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/linux-cluster
>>>>       
>>>
>>> -- 
>>> Linux-cluster mailing list
>>> Linux-cluster at redhat.com
>>> https://www.redhat.com/mailman/listinfo/linux-cluster
>>>     
>>
>>
>>   
>
>
>