For ATA RAID, Adaptec 2400a + 128 Mb cache, and Promise SX4000 with 256 Mb cache. The SX4000 is will also work with 66 HMz / 64-bit PCI, but that means usually a dual-CPU mobo.At todays drive and RAID controller specs:To what level can IDE preform Satisfactorily At what point does SCSI become the best option over IDE. General information on IDE vs SCSI controllers ?
That's not very many msgs. ATA133 hooked to an Adpatec 2400a or Promise SX4000 will be overkill.Given a server delivering say 5k-10k of messages (after any pre IMGATE, Declude, Other processing) IDE ? - SCSI ?
For smtp/pop, I'd still stay with ATA133 on a RAID1. If you have heavy webmail/imap and resulting much larger on-average mailboxes and heavy disk i/o for mailbox header scanning, then just maybe SCSI 160 just might have an advantage, but you'd still need SCSI controller with big cache to beat ATA RAID with cache. But with heavy webmail access, the CPU + RAM start coming into play more. If you have a sane policy of max mailbox size, then you are at less risk from imap/webmail abuse.Given a server delivering say 15k-20k of messages (after any pre IMGATE, Declude, Other processing) IDE ? - SCSI ? Given a server delivering say 75k-100k of messages (after any pre IMGATE, Declude, Other processing) IDE ? - SCSI ? Given a server delivering say 150k-200k of messages (after any pre IMGATE, Declude, Other processing) IDE ? - SCSI ?
http://www.xbitlabs.com/storage/raid-roundup-2/
Len
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