Hello, Am 19:16 2003-02-24 +0100 hat Russell Coker geschrieben: > >On Mon, 24 Feb 2003 18:34, Colin Ellis wrote:
>The fastest drives (15000rpm) will take an average of 4ms for the disk to spin >to the correct location to start a transfer in addition to the seek times for >moving the heads. That gives a performance of something less than 100 IO >operations per second per disk. I am working on a bunch of Dell PowerEdge >2650 machines with 4*U160 15000rpm SCSI disks in a hardware RAID-5 with a >battery backed write-back cache. This gives a peak performance of about 130 >disk writes per second. Last year I have gotten a Athlon MP 1900 with an IPC-Vortex Raid-5 and three IBM 146 GByte (U320/10000). I have tested it with postgresql and with a smpt/pop3 Server. I have made a stresstest by seting up 50 users and subscribed all to more then 40 debian-* Mailinglist... Traffic enough !!! The server has handled more then 220 Mails/second unfortunately I was not able to test in the same time user accesses with pop. OK, for you a little Bbit overkil like for me... I think, I will handle only 500-800 Users with normal traffic which mean, around 10-20 mails a day. Traffic which can handled by a Duron 900MHz, 256 MB and a RAID-5 Array of 3 x IBM 18 GByte (U320/10000) on an IPC-Vortex. My Dual-Athlon will be the central nfs-Server of my Cyber-Center/ Internet-Cafe in Strasbourg, where users have 100 MByte Diskspace, Which can used for private files, ~/public_html, ~/mail and ftpspace inside of ~/public_html. in plus it serves Webmail, pop3, asmtp and suports 30-40 Workstations with nfs inside my Cyber-Center. I have used Webmin but it does not what I need and now I use my own php4 Scripts to manage the users... I think, there is no problem with the traffic. Oh yes, if I run public, I will use 4 + 1 Harddisk. Greetings from Strasbourg Michelle -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
