57 messages in org.freebsd.freebsd-amd64suggestions for SATA RAID cards| From | Sent On | Attachments |
|---|---|---|
| Willem Jan Withagen | Aug 23, 2006 8:01 am | |
| Steven Hartland | Aug 23, 2006 8:23 am | |
| Willem Jan Withagen | Aug 23, 2006 10:01 am | |
| Steven Hartland | Aug 23, 2006 10:55 am | |
| Bob Willcox | Aug 23, 2006 12:02 pm | |
| Greg Martin | Aug 23, 2006 3:05 pm | |
| Willem Jan Withagen | Aug 23, 2006 3:14 pm | |
| Freddie Cash | Aug 23, 2006 3:26 pm | |
| Greg Martin | Aug 23, 2006 3:45 pm | |
| Nikolas Britton | Aug 23, 2006 3:46 pm | |
| Willem Jan Withagen | Aug 23, 2006 3:52 pm | |
| Nikolas Britton | Aug 23, 2006 4:13 pm | |
| Nikolas Britton | Aug 23, 2006 4:35 pm | |
| Dan Langille | Aug 23, 2006 8:07 pm | |
| Francisco Reyes | Aug 24, 2006 12:36 am | |
| Andreas Klemm | Aug 24, 2006 5:39 am | |
| Nikolas Britton | Aug 24, 2006 6:39 am | |
| Daniel O'Connor | Aug 24, 2006 7:56 am | |
| Nikolas Britton | Aug 24, 2006 4:22 pm | |
| Scott | Aug 24, 2006 4:41 pm | |
| Darren Pilgrim | Aug 24, 2006 5:06 pm | |
| David O'Brien | Aug 24, 2006 6:19 pm | |
| David O'Brien | Aug 24, 2006 6:26 pm | |
| Daniel O'Connor | Aug 25, 2006 12:03 am | |
| Mark Kirkwood | Aug 25, 2006 1:48 am | |
| Dan Langille | Aug 26, 2006 4:22 pm | |
| Francisco Reyes | Aug 27, 2006 3:08 am | |
| Dan Langille | Aug 27, 2006 2:19 pm | |
| Francisco Reyes | Aug 27, 2006 4:36 pm | |
| Dan Langille | Aug 27, 2006 8:57 pm | |
| Francisco Reyes | Aug 28, 2006 2:21 pm | |
| Dan Langille | Aug 28, 2006 10:18 pm | |
| Barkley Vowk | Aug 29, 2006 8:10 pm | |
| Albert Chin | Aug 31, 2006 7:23 pm | |
| Jo Rhett | Sep 7, 2006 6:47 pm | |
| Fabian Wenk | Sep 7, 2006 9:07 pm | |
| Steven Hartland | Sep 7, 2006 9:24 pm | |
| Jo Rhett | Sep 7, 2006 10:06 pm | |
| Steven Hartland | Sep 8, 2006 9:14 am | |
| Gibson, Jasen (GE Indust, ConsInd, consultant) | Sep 8, 2006 12:22 pm | |
| Jo Rhett | Sep 8, 2006 4:16 pm | |
| Mark Kirkwood | Sep 9, 2006 1:00 am | |
| Steven Hartland | Sep 9, 2006 6:34 am | |
| Steven Hartland | Sep 9, 2006 6:52 am | |
| Mark Kirkwood | Sep 9, 2006 8:38 am | |
| Mark Kirkwood | Sep 9, 2006 4:32 pm | |
| Chris Hedley | Oct 2, 2006 10:02 am | |
| Gibson, Jasen (GE Indust, ConsInd, consultant) | Oct 4, 2006 6:12 am | |
| Steven Hartland | Oct 4, 2006 6:58 am | |
| Chris Hedley | Oct 4, 2006 7:37 am | |
| Pete French | Oct 4, 2006 7:49 am | |
| Gibson, Jasen (GE Indust, ConsInd, consultant) | Oct 4, 2006 7:53 am | |
| Matthew D. Fuller | Oct 4, 2006 7:59 am | |
| Pete French | Oct 4, 2006 8:11 am | |
| Matthew D. Fuller | Oct 4, 2006 8:21 am | |
| Pete French | Oct 4, 2006 9:36 am | |
| Chris BeHanna | Oct 4, 2006 10:00 am |
| Subject: | suggestions for SATA RAID cards | |
|---|---|---|
| From: | Jo Rhett (jrh...@svcolo.com) | |
| Date: | Sep 8, 2006 4:16:06 pm | |
| List: | org.freebsd.freebsd-amd64 | |
Jo Rhett wrote:
FYI, several people have claimed that the 1820a is "hardware" -- this is untrue. It's hardware accelerated, but all of the raid logic is in the driver. It's sludgeware", not hardware raid. Performance tests against a real hardware raid adapter will demonstrate what I mean.
On Fri, Sep 08, 2006 at 06:16:09AM +0100, Steven Hartland wrote:
I believe you are wrong here and my own performance tests here backs this up, showing it keeps up with the more expensive areca in a number of areas notably, providing 180MB/s in sequential read tests from a 5 disk array.
It seems clear you don't understand the difference between driver-based raid support and hardware-based raid. Unless you just forgot to mention the CPU load level you had artificially added prior to starting this test...
-- Jo Rhett senior geek SVcolo : Silicon Valley Colocation