Date: Sat, 19 Apr 2008 14:31:10 +0200 From: "Josep Pujadas i Jubany" <josep@bellera.cat> To: freebsd-proliant@freebsd.org Subject: Re: gmirror problem with HP Proliant ML110 G5 Message-ID: <20080419120849.M54812@bellera.cat> In-Reply-To: <CDC638EB-7A4B-433E-9689-22CE8439E8C4@ultra-secure.de> References: <20080417171439.M22551@bellera.cat> <20080417172729.M94092@bellera.cat> <83ABD599-A699-4CD8-AF1F-D42357C7D9B9@yahoo.it> <20080418092034.GA34069@eos.sc1.parodius.com> <20080418175001.M1439@bellera.cat> <CDC638EB-7A4B-433E-9689-22CE8439E8C4@ultra-secure.de>
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On Fri, 18 Apr 2008 20:30:47 +0200, Rainer Duffner wrote > Am 18.04.2008 um 20:14 schrieb Josep Pujadas i Jubany: > > > On Fri, 18 Apr 2008 02:20:34 -0700, Jeremy Chadwick wrote > >> On Fri, Apr 18, 2008 at 07:12:06AM +0200, Gianni wrote: > >> > >> Josep, the disks may be the same in capacity, but they aren't > >> completely > >> identical. It's fairly obvious one is a Seagate and the other is > >> HP/Compaq drive. > > > > Yes, I know. It is difficult to have exactlly the same model when > > you buy a > > machine to HP in Spain. First disk comes with the machine and the > > second in > > a separate box. But I have many machines like this using gmirror > > and no > > problem up to now. > > IBM's OEMed LSI SAS RAID-controllers (in the blades) likes to have > identical drives with identical firmware-revisions, before it even > lets you create a RAID1. > That's why you (supposedly) pay a premium for IBM and HP: they are > supposed to stock enough spare parts so that they can still supply > you with them in a couple of years down the road. Ok, I know too. Dell & others also ... But I'm in a school and we don't have money to buy servers like you explain. Just two disks with software mirror (gmirror), not RAID controllers ... > >> This is very likely **not** the cause of the DMA errors you're > >> seeing, but I did want to take a moment to state that mix-matching > >> drives with different semantics in a mirror is somewhat risky. > > > > No other solution. If one disk fails and I have to change it I'm > > quite sure > > I will not find the same model. Same geometry yes, but exactly the > > same > > model not. > > HP should be able to deliver! > If not, I'd not bother with their stuff and just order Tyan-barebones > right away. > > IMO, the low-end HP stuff is not worth the trouble - anything below > DL360 is so cheap that I'd have problems calling it a "server" actually. > > I think I'd rather buy a DL380 from ebay - because those are rock- > solid and use decent hardware. The rest are just "Me too"-products so > that the roadmap starts at a lower entry price (somebody obviously > got annoyed of all the "HP"="high-price" babble) We have many G4 (HP Proliant ML110) well working with FreeBSD 6.2. But it seems like ML110 G5 and FreeBSD 7.0 can't work without problems. On the other hand we bought also one HP Proliant ML310 G5. FreeBSD 7.0 is working without problems in this machine. The disk controller seems to be the same if I use: # pciconf -lv Regards, Josep Pujadas
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