On Tue, 29 Jun 2004 23:16, Michelle Konzack <[EMAIL PROTECTED]> wrote: > Am 2004-06-29 09:49:12, schrieb Gustavo Polillo: > > Hi everybody.. > > > > sorry by may english, but I am brazilian.... > > I'd like to know how the email server works with thousand users... > > lvm??? how storage de inbox with 500Mb size and with 10000 users??? > > Sorry, but nobody puts 10.000 $USER with 500 MByte each on one Box ! > I am at freenet.de and they have around 300 Mailbox-Servers...
Why not? The last ISP I worked for had >200,000 users per 2U back-end machine. The quotas were quite a lot lower than 500M, but the trick was in making sure that the vast majority of accounts were not near the quota. > I think, the limit today is at 1000 $USER for redunancy and secrity. That's an expensive way to run things. $10K for a server means that each user eats a $10 start-up cost plus 1/1000 of the on-going maintenance and support costs for the server. > AND (!!!) a Bunch of little Athlon 2600 with a SCSI-Raid (3-4 Disks > of 147 GB) are cheaper as one Big machine. Best to use 2U machines with the maximum number of disks IMHO. A 2U machine should be able to have 5 disks. It seems that ATA disks are available in larger sizes than SCSI. One supplier I checked offers IDE disks up to 300G in size, but SCSI only to 147. Get 5 * 300G disks in a RAID-5 and you have 1.2T in 2U. That should fit 10,000 users with a 500M quota each with room to spare. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/ Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page
