zfs raid and/or hardware raid..
I have a dimension 9150 that I am going to put amd64 freebsd on to play with. It has Intel ICH7 SATA300 on it, in the bios it says it can do raid. I'm assuming that would be a hardware raid.. Would I be better off just using two disks and mirror them in software raid (zpool) or using the Intel hardware-ish raid and then zfs the raid? box has 2G of ram, and a pair of 250G sata 300 drives. clues appreciated. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: zfs raid and/or hardware raid..
If your are just going to play with it, the play as much as you want with ZFS. But, if you are going to setup something that will have to go on production some day, at least at this moment i wouldn't recommend you ZFS. I've used it for a backup server, and due to power failures in the building, all the times the energy went out the pool got corrupted, the las one was completely unrecoverable.I ended up using gconcat/gstripe and so on, and despite a couple more power failures, just once I've had to run fsck.Everything works (and feels) much more solid now. Just my opinion. B. Cook wrote: I have a dimension 9150 that I am going to put amd64 freebsd on to play with. It has Intel ICH7 SATA300 on it, in the bios it says it can do raid. I'm assuming that would be a hardware raid.. Would I be better off just using two disks and mirror them in software raid (zpool) or using the Intel hardware-ish raid and then zfs the raid? box has 2G of ram, and a pair of 250G sata 300 drives. clues appreciated. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: zfs raid and/or hardware raid..
On Wed, Feb 11, 2009 at 12:58:04PM -0500, B. Cook wrote: I have a dimension 9150 that I am going to put amd64 freebsd on to play with. It has Intel ICH7 SATA300 on it, in the bios it says it can do raid. I'm assuming that would be a hardware raid.. You are assuming wrong. It is software RAID, just like almost all on-board RAID implementations (and most of the cheaper add-on RAID cards.) RAID that is supported in the BIOS have one advantage over other software implementations, and that is that you can boot from all supported RAID configurations, which is not always the case otherwise. Would I be better off just using two disks and mirror them in software raid (zpool) or using the Intel hardware-ish raid and then zfs the raid? box has 2G of ram, and a pair of 250G sata 300 drives. clues appreciated. ZFS still feels a little bit too experimental for my own tastes (although opinions differ on that matter), but apart from that ZFS is probably the best solution. -- Insert your favourite quote here. Erik Trulsson ertr1...@student.uu.se ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: zfs raid and/or hardware raid..
RAID implementations (and most of the cheaper add-on RAID cards.) RAID that is supported in the BIOS have one advantage over other software implementations, and that is that you can boot from all supported RAID configurations, which is not always the case otherwise. always - if you use software RAID (gmirror) properly. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: zfs raid and/or hardware raid..
On Wed, Feb 11, 2009 at 10:18:42PM +0100, Wojciech Puchar wrote: RAID implementations (and most of the cheaper add-on RAID cards.) RAID that is supported in the BIOS have one advantage over other software implementations, and that is that you can boot from all supported RAID configurations, which is not always the case otherwise. always - if you use software RAID (gmirror) properly. gmirror handles only RAID-1 if I am not mistaken. That is the exception where you can boot from a RAID array even the BIOS does not know about it. (But I would worry about what would happen if you were trying to boot from a degraded RAID-1 array. What happens if the BIOS tries to boot the wrong disk?) For a RAID-0, RAID-5, or RAID-10 array on the other hand, I think it is not possible to boot from them unless you have a BIOS which understands the array format. -- Insert your favourite quote here. Erik Trulsson ertr1...@student.uu.se ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
