Re: Recommendet (P)ATA-Controller for Raidframe
As stuart has pointed out, upgrading that will not be as easy as it could with hw raid. Yes, as long it is compatible with my budge ;) Is there any reason why a bsd.raidframe (for example) kernel could not be shipped with the distribution with all the device nodes static etc. ? Edd
Re: Recommendet (P)ATA-Controller for Raidframe
Edd Barrett schrieb: The raid will use 3 or 4 identical harddrives. Is that mirrored? If so, heres a gotcha: http://www.openbsd.org/cgi-bin/man.cgi?query=raidctlsektion=8 Note as well that RAID 1 sets are currently limited to only 2 components. At present, n-way mirroring is not possible. However, I think with multiple layered mirroring, what you want is possible. I was thinking about using (testing :) RAID 5. As stuart has pointed out, upgrading that will not be as easy as it could with hw raid. Yes, as long it is compatible with my budge ;) Hope that sves you some time and frustration. Thanks Ulrich Kahl
Re: Recommendet (P)ATA-Controller for Raidframe
--On 28 July 2005 20:53 +0200, Ulrich Kahl wrote: Stuart Henderson schrieb: Oh, I have one of those. Unless it's a late revision, using the on-board cache only the first 128mb RAM is cacheable (K6-III helps on this motherboard due to the on-chip cache). And don't forget, if your filesystems are large, that you'll need plenty of RAM to fsck. Yes, this board is one of them. Hopefully it will only affect performance. From what I've seen, yes. (Other than buggy drivers back when it was running Windows 95, that box has been quite well-behaved). What do you understand under plenty of RAM? 256, 512, 768 MB? There's a rule of thumb mentioned in the FAQ page about large disks, I think it was 1KB per 1MB of space in a filesystem (of course, splitting the disk into more fs might be an acceptable way around that).
Recommendet (P)ATA-Controller for Raidframe
Hi! I plan to set up a fileserver using RAIDframe - I can't afford a hardware RAID-controller like Megaraid i4 (around EURO 280,--) and used ones are impossible to get, so I will use the software version. The raid will use 3 or 4 identical harddrives. My questions: - what is better, every drive use it's own IDE-channel (no master/slave) or not? - will it make a difference, if I use two 2 channel controller or a 4 channel one (like HighPoint RocketRAID 454)? - recommendations which controller(s) I should buy? The board, which I will use is a ASUS P5A Super 7 with ALi Aladdin V chipset. TIA and regards, Ulrich
Re: Recommendet (P)ATA-Controller for Raidframe
The raid will use 3 or 4 identical harddrives. Is that mirrored? If so, heres a gotcha: http://www.openbsd.org/cgi-bin/man.cgi?query=raidctlsektion=8 Note as well that RAID 1 sets are currently limited to only 2 components. At present, n-way mirroring is not possible. However, I think with multiple layered mirroring, what you want is possible. As stuart has pointed out, upgrading that will not be as easy as it could with hw raid. Hope that sves you some time and frustration. regards Edd
