Am 2007-04-05 10:05:34, schrieb Craig Sanders: > yep, that and postfix (or other MTA) queues. > > disk i/o is the main bottleneck in any mail server. if you can offload > that to fast (but battery-backed!), ram-disk then you have a massive > performance gain on a loaded mail server. AFAIK need the journal or ext3 at least 32 MByte and then per GByte storage 8 MByte again Which mean, I have a journal of over 28 GByte! (Raid-5: 13x 300 GByte + 2x 300 GByte HotSpare) > lot cheaper than an I-RAM. about $50 AUD for a brand-new 80GB drive, > which is about the smallest drive you can get nowadays. I can not believe that a HSS with PATA Hardware can support an external ext3 Journal for a very fast Raid-5 of 3600 GByte. > i.e. spend $50 on a new SATA drive for the external journal device > and get 80-90% of the performance improvement that you would get for > spending $500 on a 4GB I-RAM. Better to use a Western Digital WD360 Raptor which is SATA but Hardware is SCSI and costs around 96 Euro (~130US$). Thanks, Greetings and nice Day Michelle Konzack Systemadministrator Tamay Dogan Network Debian GNU/Linux Consultant -- Linux-User #280138 with the Linux Counter, http://counter.li.org/ ##################### Debian GNU/Linux Consultant ##################### Michelle Konzack Apt. 917 ICQ #328449886 50, rue de Soultz MSN LinuxMichi 0033/6/61925193 67100 Strasbourg/France IRC #Debian (irc.icq.com)
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