Date: Tue, 16 Jul 2002 08:39:05 -0500 From: "Jack L. Stone" <jackstone@sage-one.net> To: "Tortise@Paradise" <tortise@paradise.net.nz>, "Andrew P. Lentvorski" <bsder@mail.allcaps.org>, "Glen Mehn" <glen@burningman.com> Cc: <freebsd-stable@FreeBSD.ORG> Subject: Re: Poor Mans Software raid 1 on root partition? Message-ID: <3.0.5.32.20020716083905.0117a758@mail.sage-one.net> In-Reply-To: <011c01c22c8e$8e6d6f70$0900a8c0@P1200n> References: <20020715225138.V82789-100000@mail.allcaps.org>
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At 06:03 PM 7.16.2002 +1200, Tortise@Paradise wrote: >> > You can get a 3ware 7210 for $120: http://newegg.com >> > >> > it'll save you a lOT of time and heartache, and it's not that much $$... >> >> True, but if that 3ware quits making those cards and your card goes, your >> data is completely lost. And what if you choose not to upgrade each time >> 3ware spins the cards? How much testing does 3ware do against say the >> 6000 series? Can I take my drives on my 68XX card and plug them into a >> 78XX card and have them work? What about if 3ware creates an 88XX series? >> >> One significant advantage to software RAID is the fact that you can still >> extract your data from the disk even if you have to completely transplant >> the disks to different hardware. > >mmmm > >I think what I want to achieve is a second SCSI disc, which is regularly >"backed up to" in some fashion, although in less than real time be OK. (vis >a vis RAID) so long as it is a bootable reliable "backup" with a >controllable interval backup. (Also avoids the hardware reliance. I have >one machine (W2000) which has a backup RAID card so it can be got running >again quickly......without worrying about sourcing another card..... Clearly >this is undesirable...) > >Does anyone do this? > >Regards >David Hingston MB ChB MBA >_________________________________________________________________________ >tortoise@paradise.net.nz >http://hingston.yi.org/ >http://pcmc.yi.org/ >If you seek a digitally signed response please advise. >If you received a warning on reading this e-mail, please go to >http://www.baycorpid.com/settings/email.asp?CA=healthcert to update your >settings > > Please don't take this wrong, but on all OS lists, the emphasis always seems to be on the "backup" and very little on the restore -- and I'm speaking more from the disaster recovery -- to get back up and running within minutes. In raising the question about that, I have noticed few have ever "tested" any sort of backup plans to see if they really can restore, or how quickly they can restore. I for one would sure like to hear more about recovery plans..... mine is to use two identical HDs on each server and run DD frequently, with tars for incremental. Thus, I have found it very simple to shut down, pull the bad HD, move HD #2 up and re cable it -- then boot and voila! I'm back up. THEN, add back any incremental while running in the meantime.... Yes, critical files are backed up over NFS to other machines.... and other types of backups used too, but I 'm only referring to getting up & running as fast as possible. Tape restore is too slow for me.... please don't jump on me about tapes... I use them too but HDs are cheap and I use lost of them for fast backups and restores..... Just for the sake of discussion..... I'd be interested in hearing about more restores... successful ones... not "plans" to restore. Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net jackstone@sage-one.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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