Damon Estep
2005-Sep-09 07:34 UTC
[Asterisk-Users] Motherboard and processor recommendations
I agree, use either SCSI with hardware raid with a battery backed cache or use sata/ide with linux software raid. Linux raid SCSI also works well, but if you go for the scsi drives might as well get the controller too. The "firmware" raid on the cheap sata/ide cards have left me stranded several times, I have had experiences were both an HP and Promise IDE raid controller have SCRAMBLED both drives during a rebuild of a failed drive. What is the point of RAID if you have to restore tapes anyways?> > Or shitcan the onboard raid and get a real hardware raid controllerlike> a 3ware card (if you are stuck on IDE / SATA.) Reduces complexity. > > On Fri, Sep 09, 2005 at 09:23:44AM +0300, Tzafrir Cohen said: > > On Fri, Sep 09, 2005 at 08:05:09AM +0200, Clive wrote: > > > Hi > > > > > > I discovered that most onboard raid controllers are reallysoftware> > > raid, and it uses the cpu to perform raid functions. > > > > Also: in such a settings you can get comperable performance by using > > Linux's built-in software raid. And for that you won't depend on > > non-standard drivers from the vendor for that. > > > > -- > > Tzafrir Cohen | tzafrir@jbr.cohens.org.il | VIM is > > http://tzafrir.org.il | | a Mutt's > > tzafrir@cohens.org.il | | best > > ICQ# 16849755 | | friend > > _______________________________________________ > > --Bandwidth and Colocation sponsored by Easynews.com -- > > > > Asterisk-Users mailing list > > Asterisk-Users@lists.digium.com > > http://lists.digium.com/mailman/listinfo/asterisk-users > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
I also agree. You want a raid controller that has it's own CPU. You want hot spare, hot swapping, status lights, etc. to be handled by that controller. If you have a hot spare you want automatic cutover to that spare drive. You are not limited to SCSI with these controllers. Some manufactures offer ide and sata versions. If you want hot swap capability be sure to do your homework. Some drive hardware advertised as hot-swap capable might not work properly with the controller you select. Damon Estep wrote:>I agree, use either SCSI with hardware raid with a battery backed cache >or use sata/ide with linux software raid. Linux raid SCSI also works >well, but if you go for the scsi drives might as well get the controller >too. > >The "firmware" raid on the cheap sata/ide cards have left me stranded >several times, I have had experiences were both an HP and Promise IDE >raid controller have SCRAMBLED both drives during a rebuild of a failed >drive. What is the point of RAID if you have to restore tapes anyways? > > > >>Or shitcan the onboard raid and get a real hardware raid controller >> >> >like > > >>a 3ware card (if you are stuck on IDE / SATA.) Reduces complexity. >> >>On Fri, Sep 09, 2005 at 09:23:44AM +0300, Tzafrir Cohen said: >> >> >>>On Fri, Sep 09, 2005 at 08:05:09AM +0200, Clive wrote: >>> >>> >>>>Hi >>>> >>>>I discovered that most onboard raid controllers are really >>>> >>>> >software > > >>>>raid, and it uses the cpu to perform raid functions. >>>> >>>> >>>Also: in such a settings you can get comperable performance by using >>>Linux's built-in software raid. And for that you won't depend on >>>non-standard drivers from the vendor for that. >>> >>>-- >>>Tzafrir Cohen | tzafrir@jbr.cohens.org.il | VIM is >>>http://tzafrir.org.il | | a Mutt's >>>tzafrir@cohens.org.il | | best >>>ICQ# 16849755 | | friend >>>_______________________________________________ >>>--Bandwidth and Colocation sponsored by Easynews.com -- >>> >>>Asterisk-Users mailing list >>>Asterisk-Users@lists.digium.com >>>http://lists.digium.com/mailman/listinfo/asterisk-users >>>To UNSUBSCRIBE or update options visit: >>> http://lists.digium.com/mailman/listinfo/asterisk-users >>> >>> >>_______________________________________________ >>--Bandwidth and Colocation sponsored by Easynews.com -- >> >>Asterisk-Users mailing list >>Asterisk-Users@lists.digium.com >>http://lists.digium.com/mailman/listinfo/asterisk-users >>To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users >> >> >_______________________________________________ >--Bandwidth and Colocation sponsored by Easynews.com -- > >Asterisk-Users mailing list >Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users >To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >