Hardware Raid question
Hello, I have a 5.2 FBSD system with a highpoint ATA raid controller and 2 x WD 200 ATA HD's. I created a Raid 1 array in the HP bios. dmesg output: ad4: 194481MB Maxtor 6B200P0 [395136/16/63] at ata2-master UDMA133 GEOM: create disk ad6 dp=0xc485b860 ad6: 194481MB Maxtor 6B200P0 [395136/16/63] at ata3-master UDMA133 GEOM: create disk ar0 dp=0xc4766de0 ar0: 194480MB ATA RAID1 array [24792/255/63] status: READY subdisks: disk0 READY on ad4 at ata2-master disk1 READY on ad6 at ata3-master Mounting root from ufs:/dev/ad4s1a I installed everything on 'ad4' but it I think I wanted to install it to 'ar0'. Am I right? Thanks. -- Jason ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Hardware Raid question
Jason Lieurance wrote: I installed everything on 'ad4' but it I think I wanted to install it to 'ar0'. Am I right? Thanks. Yep, ar is the Atapi Raid driver, ad is just the individual disk :) -- Mike Woods IT Technician ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Hardware Raid question
Mike Woods wrote: Yep, ar is the Atapi Raid driver, ad is just the individual disk :) s/Atapi/ata/ Less haste, more coffee, the key to better typing. -- Mike Woods IT Technician ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Hardware Raid question
Mike Woods said: Jason Lieurance wrote: I installed everything on 'ad4' but it I think I wanted to install it to 'ar0'. Am I right? Thanks. Yep, ar is the Atapi Raid driver, ad is just the individual disk :) -- Mike Woods IT Technician Why does the os even detect the individual drives when the raid card made it a single drive and the os install is after the raid bios??? Thanks for the help. -- Jason ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Hardware Raid question
Why does the os even detect the individual drives when the raid card made it a single drive and the os install is after the raid bios??? Because the chipset provides means to control both single disks and arrays thus you get both, just the way that card chose to do things :) - Mike Woods IT Technician ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Hardware Raid question
On Tue, Jan 18, 2005 at 07:58:59PM +, Mike Woods wrote: Why does the os even detect the individual drives when the raid card made it a single drive and the os install is after the raid bios??? Because the chipset provides means to control both single disks and arrays thus you get both, just the way that card chose to do things :) - Mike Woods IT Technician Question on this... I noted that if I come up on the fixit disk, I can use atacontrol to 'create' a RAID1 array across two disks with ONLY the motherboard IDE controller! It also APPEARS to read/write to both disks - and if I disconnect one of them, intentionally failing it, it also appears to do the 'right thing' and keep running in degraded mode too! However, a rebuild (once one 'replaces' the dead disk) instantly returns and does nothing. Is it thus correct to conclude that the DRIVER abstracts the RAID1 function internally, and that the only thing you lose is the ability to replace/recopy the array? That is, in the event of a failure you could dump the remaining (good) disk, replace the bad, re-initialize the array and then copy it back - you'd lose hot rebuilds, but not the inherent protection of the mirroring. Am I missing something here? -- -- Karl Denninger ([EMAIL PROTECTED]) Internet Consultant Kids Rights Activist http://www.denninger.netMy home on the net - links to everything I do! http://scubaforum.org Your UNCENSORED place to talk about DIVING! http://www.spamcuda.net SPAM FREE mailboxes - FREE FOR A LIMITED TIME! http://genesis3.blogspot.comMusings Of A Sentient Mind ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
