SATA vs SCSI RAID 5?

[Simon]

I've been running 5.2.1-R on an isolated data backup server with 3ware ATA
8 channel RAID with 250GB maxtor drives. It does daily backups of multiple
servers. You can monitor array status using 3amd daemon. So far uptime is
almost a year. It does nothing but backups... I'm not sure how it would
compare VS SCSI RAID under high IO. We only use SCSI RAID on our web
servers which get pretty busy. I'm looking forward to using LSI RAID cards
with 5.3 I'm using one with 4.x, it's been working fine for several months, now.
Unfortunately, the monitoring suite is broken due to some bug and I wish
someone would fix it. I emailed the author, but there was no response.  I'm
relying on SAF-TE enclosure to tell me if any of the drives are dead. Frankly,
there isn't much choosing when it comes to SCSI RAID and FreeBSD as of
late. It's either the adaptec, which has a share of it's problems, or LSI which
works fine but lacks monitoring tools.

-Simon


On Tue, 11 Jan 2005 13:50:49 -0500 (EST), Gerald wrote:

>I recently setup a SATA RAID1 box on a highpoint controller. The
>machine is playing very nicely with FreeBSD and doing much better than
>I initially expected. Now I'm considering upgrading a SCSI system to
>another SATA RAID 5 system.
>
>Can anyone tell me about SATA RAID 5 experiences? The company I'm
>looking at purchasing this from is using the Highpoint R1820 controller.
>
>SATA= "putting the 'I' back in RAID" or "magic 8 ball says, 'Ask again
>later."?
>
>For reference on the decision making, the present machine is setup on an
>Adaptec 3200S with all but one of the partitions as RAID1 and the last
>one as RAID5. All the drives in the present system are SCSI SCA 10k RPMs
>I believe. The machine is primarily an apache 1.3/freeBSD 4 web server
>doing 25-30 MB of web traffic at peak 17-20 MB on Average.
>
>Gerald
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