Hi! I know this is a little bit offtopic, but i couldn't think of any other place where i can get uninfluenced first hand information on these controllers :) I've read about and experienced data loss/system lockup with older 3ware controllers, but the 3ware Escalade 7xxx (i'm especially interested in the 7850) sounds too good to ignore it (8 channels, 8 drives, raid 0/1/5/10, drive-side ide bus, system-side scsi bus). Does anybody use Escalade 7xxx in production systems? How does it perform? If it's not any good, do you know any other IDE Raid controllers with similiar specs like the 3ware? best regards, Michael Renner
On Mon, Mar 25, 2002 at 01:06:32PM +0100, Michael Renner wrote:> Hi! > > I know this is a little bit offtopic, but i couldn't think of any other > place where i can get uninfluenced first hand information on these > controllers :) > > I've read about and experienced data loss/system lockup with older 3ware > controllers, but the 3ware Escalade 7xxx (i'm especially interested in the > 7850) sounds too good to ignore it (8 channels, 8 drives, raid 0/1/5/10, > drive-side ide bus, system-side scsi bus).I have been using the series 5xxx on rpmfind.net and fr.rpmfind.net for 2 years now (but in JBOD mode, no RAID). It's the best decision I did hardware wise on the rpmfind boxes IMHO.> Does anybody use Escalade 7xxx in production systems? How does it perform? > If it's not any good, do you know any other IDE Raid controllers with > similiar specs like the 3ware?I just migrated the speakeasy rpmfind.net mirror to this configuration (7xxx + RAID 5) it had been running for one week now. I got a bug it it wasn't looking like related to 3Ware but rather an ext3/TUX interraction bug. Oh, while we are in the nearly-religious-hardware-feeling-dept, I only use Maxtor 5400 rpms drives. Daniel -- Daniel Veillard | Red Hat Network http://redhat.com/products/network/ veillard@redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/
> Hi! > > I know this is a little bit offtopic, but i couldn't think of any other > place where i can get uninfluenced first hand information on these > controllers :)linux-ide-arrays@lists.math.uh.edu This is a majordomo list so send your subscription via the usual MJ mechanism There is also an IRC channel #linux-ide-arrays on openprojects.net
On Mon, Mar 25, 2002 at 01:06:32PM +0100, Michael Renner wrote:> I've read about and experienced data loss/system lockup with older 3ware > controllers, but the 3ware Escalade 7xxx (i'm especially interested in the > 7850) sounds too good to ignore it (8 channels, 8 drives, raid 0/1/5/10, > drive-side ide bus, system-side scsi bus). > > Does anybody use Escalade 7xxx in production systems? How does it perform? > If it's not any good, do you know any other IDE Raid controllers with > similiar specs like the 3ware?Right now we have a 7850 with 6 Maxtor 160Gb disks in a RAID1+RAID0 configuration. The RAID1 is done with the 3ware, the RAID0 in done in software. This is faster than doing RAID10 on the 3ware. With this we get 70Mb/sec write and 115Mb/sec read speed. The hardware we use is a P-III 1.13GHz Tual., Supermicro P3TDLE, 512MB Reg SDRAM, 3ware 7850 (with the new 7.4 firmware, and in a 64-bit PCI slot). The software is 2.4.18 with the newest 3w-xxxx.[ch] from 3ware. The md0 chunk size is 256kb, filesystem is ext3 (data=ordered), and the speeds are measured with "bonnie++ -f -b -n0 -s 65536". A while back I tried RAID5 with it. With 5 Maxtor 160Gb disks I got about 10Mb/sec write speed and 25Mb/sec read speed, which was disappointing. Eric