Re: [K12OSN] SCSI Disk subsystems was: Building a newlab server... recommendations?

[Immanuel Derks <I Derks translucent nl>]

Op di 01-04-2003, om 06:53 schreef Terrell Prude', Jr.:
Sounds very reasonable to me and exactly my findings concerning single scsi channel raid setups: I have seen respectable performance in good relation to bus width and amount of disks
attached.
That's why I'm so confused to have only 47MB/s on a single channel scsi-320 Raid0 setup with a hardware SeveRAID-5i controller (128MB cache).
Disks also scsi320 15000rpm 'course.
It should scream at least double that speed otherwise it is simply not worth the investment and besides the point having hardware raid controllers.
It would then be more interesting financially,performance wise and for redundancies sake to do software raid on two channels.
I just hope my controller is broken to account for the abominable bad performance....(do we keep on trusting IBM hardware?)

Alla, still hope some scsi320 server out there with a hardware controller on a single channel raid setup can push some hdparm's to the list :)

Kind regards, Immanuel