Re: hardware specs

again, thank you so much for such a great and detailed answer.

you¹ve helped a lot, and because of you, I have all my answers.

thank you again.   : )

tahir


On 12/30/05 12:25 AM, "Daniel Liston" <[email protected]> wrote:

> Your mileage may vary, but in terms of space, power, performance,
> price, and heat, you may find the T1000 to be a better deal for
> about the same price as the v210.  In my opinion, they are both
> noisy, but most people do not keep either one under their desk.
> 
> I have dequeued 375,000 messages from a Sun MTA on a sf440 class
> server across a gigabit network to a Sun mailstore with the new
> Niagra (CMT) processor and beta storage arrays in 30 minutes.  I
> doubt you will ever see this kind of performance when you have
> forces outside your control acting against you, like destination
> MX hosts off-line, DNS corruption, maximum recipient restrictions
> with all the major online providers, etc.
> 
> To really answer your question, is the v210 big enough?  That is
> dependent on how many messages you need to send to your million
> users each day, or how many lists with a million subscribers you
> have.  I like to err on the cautious side, but you need to do the
> math.  How many messages of what size to how many distribution
> lists with how many zubscribers per day/week/month whatever?
> 
> You might be able to get more than 40 msg/sec off the system, but
> even if you got 10 recipients per/msg successfully delivered,
> 100,000 / 40 is still 2,500 seconds, or about 42 minutes that has
> to be dedicated to each distribution.  Even getting 10 rcpt/msg
> is a bit optimistic.  Worst case scenario, going with a single
> rcpt/msg, you are looking at 42 minutes stretching to 7 hours.
> 
> All these figures do not take into account the CPU or disk I/O
> that would be required to queue the mail until delivered.  The
> way majordomo works, is one message to all one million recipients.
> Very little disk space, but also makes delivery a serial process.
> To optimize delivery, you create more messages with less addresses
> per message to be delivered.  This eats more CPU and more disk
> just to prepare for delivery.
> 
> Sorry I could not give you an exact answer,
> Dan Liston
> 
> Tahir Chaudry wrote:
>> > Dear Dan, thank you very much for your response.  We are only sending
>> > out the mail, it is more of announcements only email.
>> > 
>> > Thank you for a great insight about the bandwidth.  Do you believe
>> > we need a bigger server if the bandwidth is under control?
>> > 
>> > Thank you again,
>> > 
>> > Tahir 
>> > 
>> > 
>> > -----Daniel Liston said-----
>> > 
>> > The server you are thinking of might be a bit weak for the size
>> > of the mailing list(s) you are considering.  On the other hand,
>> > if you are running an announcement only (no replies or other
>> > interaction by your zubscribers), you might be looking at up to
>> > 40 msgs/sec output with a really fast MTA and 7Mbps connection.
>> > One outgoing distribution, on a 35k message requires 1.4Mbps of
>> > bandwidth to support 40 msg/sec.
>> > 
>> > One of these lists distributing a 35k message would eat a full
>> > T1 pipe for over 7 hours.  If you have varied bandwidth between
>> > sending and receiving data, it is your send pipe that can fill
>> > up.  This calculation assumes a separate message for each and
>> > every recipient totalling 35Gb of data to move across the pipe.
>> > 
>> > How long does it take you to copy 35Gb of data from one computer
>> > to another on your local (100Mbps?) network?  Now factor in the
>> > speed of your internet connection.
>> > 
>> > Dan Liston
>> > 
>> > Tahir Chaudry wrote:
>>> >  > I need to setup a majordomo server for around 1 Million emails per user
>>> >  > list.
>>> >  >
>>> >  > we must use sun server.  any idea what type of server would do the job?
>>> >  >
>>> >  > I was thinking V210 2x1.2GHz CPU plus 4 GB RAM.
>>> >  >
>>> >  > -- tahir
>>> >  >
>> > 
>> > 
> 



-- tahir