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You can mirror at the partition level.
Roy Vestal wrote:
|Also, do all 4 drives have to match, like SCSI? (old school brain). I know |you can mix/match sometimes, but I haven't done ANY IDE RAID. |----- Original Message ----- |From: "Roy Vestal" <[EMAIL PROTECTED]> |To: <[EMAIL PROTECTED]> |Sent: Monday, August 04, 2003 3:21 PM |Subject: Re: hw vs sw raid (was Re: [TriLUG] RAID newbie question...) | | |>Crud, can you tell i have jet lag? Let me rephrase: |> |>IDE chain 1 = 2 drives - Master/Slaved |>IDE chain 2 = 2 drives - Master/Slaved |> |>RAID 1 = Chain 2 mirroring Chain 1 |> |>Correct? |> |>----- Original Message ----- |>From: "Roy Vestal" <[EMAIL PROTECTED]> |>To: <[EMAIL PROTECTED]> |>Sent: Monday, August 04, 2003 3:18 PM |>Subject: Re: hw vs sw raid (was Re: [TriLUG] RAID newbie question...) |> |> |>>Question then, |>> I haven't setup software raid on IDE. I've only done this with SCSI |> |>so...My |> |>>question, I have a machine that will become my "server" and I want to | |raid | |>>the IDE's, I simply setup 2 on Chain one and 2 on Chain 2 and RAID 1 | |them | |>>(Chain 2 mirroring Chain 2)? |>>----- Original Message ----- |>>From: "Mike Johnson" <[EMAIL PROTECTED]> |>>To: <[EMAIL PROTECTED]> |>>Sent: Monday, August 04, 2003 3:22 PM |>>Subject: Re: hw vs sw raid (was Re: [TriLUG] RAID newbie question...) |>> |>>Jason Tower [EMAIL PROTECTED] wrote: |>> |>>>true story: last year i was called in to fix a system that used | |software | |>>>raid 1 on a data partition (but not the other partitions). one of the |>>>disks had failed and the system would no longer boot. i slapped a |>>>knoppix cd in the drive, brought it up, mounted the remaining raid |>>>partition, and scp'd the data to another system. software raid 1 is a |>>>good thing :-) |>> |>>This is an important point, that perhaps may have been missed. With HW |>>RAID, you're pretty much locked in. If you HW RAID card dies (it |>>sucks), you either swap in the spare that you had laying around, hope |>>you can find a used one off eBay, or just kiss your data good-bye and |>>head for the tapes. There is no 'standard' for HW RAID data. Every |>>vendor (and oftentimes even within a vendor -- different products) has a |>>different format for how they store their blocks. For instance, if you |>>have a HW RAID set up with 3Ware, you cannot use one of the Promise |>>(yes, they make a -true- HW IDE RAID card) if the 3Ware dies. |>> |>>If you're using software RAID, you can move the drives around and still |>>access them, or, as Jason did, even use knoppix. |>> |>>So, if you're looking for cheap, decent perfomance, just go software |>>RAID. There is a performance hit, but the cost and flexibility make up |>>for it. |>> |>>Mike |>>-- |>>"If life hands you lemons, YOU BLOW THOSE LEMONS TO BITS WITH |>> YOUR LASER CANNONS!" -- Brak |>> |>>GNUPG Key fingerprint = ACD2 2F2F C151 FB35 B3AF C821 89C4 DF9A 5DDD | |95D1 | |>>GNUPG Key = http://www.enoch.org/mike/mike.pubkey.asc |>> |>>-- |>>TriLUG mailing list : | |http://www.trilug.org/mailman/listinfo/trilug | |>>TriLUG Organizational FAQ : http://trilug.org/faq/ |>>TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ |>>TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc |>> |>> |>-- |>TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug |>TriLUG Organizational FAQ : http://trilug.org/faq/ |>TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ |>TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc |> |> | -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (Cygwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
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