Date: Tue, 18 Jun 2002 19:31:31 -0500 From: Bob Willcox <bob@immure.com> To: Remo Lacho <Remo.Lacho@verizon.net> Cc: stable@jnielsen.net, freebsd-stable@freebsd.org Subject: Re: the new ATA driver vs. vinum Message-ID: <20020619003131.GE9829@luke.immure.com> In-Reply-To: <200206181948530523.0837ACB5@smtp.verizon.net> References: <DBEFLLCPEGLPEAGOPLIHIEEODKAA.patrick-fbsdstable@mindstep.com> <0fb301c2170c$df665ff0$0900a8c0@max> <20020618215151.GB9829@luke.immure.com> <108201c2171d$ea673d00$0900a8c0@max> <200206181948530523.0837ACB5@smtp.verizon.net>
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What type of ata drives were you using? I am using IBM drives w/o any problems (with DMA enabled). Most of my disks are the 80GB and 120GB 120GXP models. With one of my setups (a 3 80GB drive RAID0 array) I get up to 90MB/s through put on reads and 70MB/s on writes. Bob On Tue, Jun 18, 2002 at 07:48:53PM -0400, Remo Lacho wrote: > I too have set up a RAID0 array on a ServerWorks ROSB4 (non-raid) controller > (but not on a production machine!), that has worked flawlessly so far. > > However, prior to setting up the array (and until the drives' mode was set to > "PIO4") the ata sub-system kept crashing continuously. > > It would seem that if the atacontrol binary ever becomes stable -- and can > run ata disks at their top rated speed -- vinum will be getting a run for its > money. > > My experiences with vinum have all ended tragically. It has never been > production level for my needs. > > When (and if) atacontrol becomes stable, you will be getting champagne for > the price of beer! > > *********** REPLY SEPARATOR *********** > > On 6/18/2002 at 5:14 PM John Nielsen wrote: > > >----- Original Message ----- > >From: "Bob Willcox" <bob@immure.com> > >To: "John Nielsen" <stable@jnielsen.net> > >Cc: "stable list" <freebsd-stable@freebsd.org> > >Sent: Tuesday, June 18, 2002 3:51 PM > >Subject: Re: the new ATA driver vs. vinum > > > > > >> On Tue, Jun 18, 2002 at 03:12:36PM -0600, John Nielsen wrote: > >> > > >> > Bear in mind that atacontrol is a utility to interact with a hardware > >ATA > >> > raid controller, and doesn't do RAID itself. Vinum allows you to do > >RAID > >> > without any special hardware. ATA RAID was possible in 4.5, you just > >had to > >> > rely on the RAID controller's BIOS to set it up and manage it if there > >was a > >> > problem. > >> > >> Actually, with the new ata driver and atacontrol you can do raid w/o an > >> ata raid controller with some restrictions. From the atacontrol man page: > >> > >> Allthough the ATA driver allows for creating an ATA RAID on > >> disks on any controller, there are restrictions. It is only > >pos- > >> sible to boot on an array if its either located on a "real" > >ATA > >> RAID controller like the Promise or Highpoint controllers, > >or if > >> the RAID declared is of RAID1 or SPAN type, in case of a > >SPAN > >> the partition to boot must reside on the first disk in the > >SPAN. > >> > >> So as long as you don't want/need to boot from the RAID, any IDE > >> controller should work. > > > >I stand corrected! I'll have to look into that some more. :) > > > >> I have several systems here runing both a RAID0 and a RAID0+1 array > >> using a standard non-RAID promise IDE controllers (TX2's as I recall). > >> Works fine! :-) > >> > >> Bob > >> > >> -- > >> Bob Willcox Dealing with failure is easy: work hard to > >improve. > >> bob@vieo.com Success is also easy to handle: you've solved the > >> Austin, TX wrong problem. Work hard to improve. > >> > > > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org > >with "unsubscribe freebsd-stable" in the body of the message > -- Bob Willcox Dealing with failure is easy: work hard to improve. bob@vieo.com Success is also easy to handle: you've solved the Austin, TX wrong problem. Work hard to improve. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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