Matthew Hagerty schrieb:
On Thu, June 7, 2007 12:46 pm, Rick C. Petty wrote:
On Thu, Jun 07, 2007 at 12:24:16PM -0400, Matthew Hagerty wrote:
After the second install, everything came up on the ar0 array
and worked fine. I ran some basic stress tests and was getting 16MB/sec
write speed and 46MB/sec read.
So, I'm off to find a "real" SATA2 PCI RAID card... :-(
"real" RAID cards cost an order of magnitude more than fakeraid cards.
What is your reason behind getting real hardware RAID? From my own
personal testing and online research, software RAID outperforms most real
RAID cards. So if your reasoning is based on performance gain, you may
be in for another shock. If your reasoning is so that you can multi-boot
different OSes without requiring drivers, then you may have a compelling
reason to go to hardware RAID. However, most cases fakeraid is good
enough.
-- Rick C. Petty
My reasoning for a hardware RAID is so I can set it and forget it. If a
drive fails (I'm setting up a mirror), I want to be able to just swap the
drive and carry on without worrying about having to do something at the
BIOS or OS level (controller should rebuild the mirror). Performance in
my case is tertiary to reliability and stability. The TX2300 might have
been the wrong choice, but you would not have known from reading the
marketing material...
The TX2300 was also blowing errors taskqueue timeout errors
(http://www.mail-archive.com/[email protected]/msg01541.html)
on the first machine I had it in, so now I'm a little skeptical about
using the card.
Matthew
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Hi Matthew!
As I wrote you in my first eMail I took the
3ware 8006-2LP 2-port SATA RAID Controller (REAL HARDWARE RAID)
which you can get new under $150 and used under $100...
It works vergy good with FreeBSD (maybe also with other BSDs) Linux and
Windows.
I've compared its performance with my TX4310 (which is similar to the
TX4300 but with RAID5 support and the TX4300 is same like TX2300 but has
4 ports) under Windows XP with SiSoft Sandra.
The 8006-2LP has a better performance than the TX4310 although it's SATA.
I don't think that it's important if you use a SATA or SATAII controller
because the bottleneck will be your hard discs.
Another advantage of Hardware RAID cards is that they don't stress the
CPU like Software or Fake RAID cards so you get more computing time for
other programs.
Regards,
Lukas
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