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Date:      Wed, 06 Sep 2000 11:57:47 -0500 (CDT)
From:      Ben Burke <bburke@mwci.net>
To:        freebsd-hardware@freebsd.org
Subject:   Which RAID Controller to Buy
Message-ID:  <XFMail.000906115747.bburke@mwci.net>

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Hello,

I'm in a bit of a time-crunch, so I hope someone has a quick and easy
answer for me. ;) I need to know which is the best (or one of the 
best) RAID 5 controllers to buy for my Dell system running FreeBSD 4
stable. I'm looking to replace the current controller with one that
is known to work without problems under FreeBSD. Here's some
background;

I have a production machine (FreeBSD 4) that is in desperate need of
a hardware upgrade. One of our business associates sent over a Dell
PowerEdge 6300. I know very little about this machine. Here's what
logs at boot time;

 /kernel: ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter>
port 0xec00-0xecff mem 0xfea02000-0xfea02fff irq 11 at device 4.0 on
pci1
/kernel: ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs
/kernel: ahc1: <Adaptec aic7890/91 Ultra2 SCSI adapter>
port 0xe800-0xe8ff mem 0xfea01000-0xfea01fff irq 10 at device 6.0 on
pci1
/kernel: ahc1: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs
/kernel: ahc2: <Adaptec aic7860 SCSI adapter>
port 0xe400-0xe4ff mem 0xfea00000-0xfea00fff irq 14 at device 8.0 on
pci1
/kernel: ahc2: aic7860 Single Channel A, SCSI Id=7, 3/255 SCBs
/kernel: pcib2: <Intel 82454NX PXB#1, Bus#A> on motherboard
/kernel: pci2: <PCI bus> on pcib2
/kernel: amr0: <AMI MegaRAID> port 0xfc80-0xfcff irq 5 at device 3.0
on pci2
/kernel: amr0: firmware Uc77 bios 1.47  32MB memory
/kernel: amrd0: <MegaRAID logical drive> on amr0
/kernel: amrd0: 34272MB (70189056 sectors) RAID 5 (optimal)

When I look at the PCI bus I see only two cards, one rather small
10/100 Ethernet card, and one extremely large card that I assume is
the RAID controller. (It has a large Intel i960 chip, two small SCSI-2
connectors, and a cable to the media cage.) 

Long story short, when running under this hardware the amr device
wedges on 4.1-STABLE (from yesterday). I need to get this machine up
with 64 k RAID 5 striping across it's 5 disks as soon as possible. 

Any help would be greatly appreciated. I'm not on the list, so please
send replies directly to me.

Thanks in Advance,
Ben Burke

-- 
 Benjamin Burke -> bburke@mwci.net  / Help Desk (319)-557-2400
 Midwest Communications, Inc.      / Toll-Free  (877)-455-6511
 Network Operations Center (NOC)  / Fax         (319)-557-9771


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