Re: [SLE] SuSE 9.3 x64 and SATA II raid

From: Michael A. Coan (mikecoan_at_woodlawnfoundation.org)
Date: 07/12/05

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    Date: Mon, 11 Jul 2005 21:09:12 -0400 (EDT)
To: suse-linux-e@suse.com

    Anders,

    > [stuff deleted]

    >> Windows 2003 is a supported guest of VMWare Wks 5.0. SuSE9.3 x64 is not
    >> officially supported, but SLES 9 is and I have read of a number of
    >> people successful running VMWare 5.0 on SUSE 9.3 x64.
    >
    > Yes, I can attest to that, it runs very nicely

    Thanks for the confirmation.

    >
    >> Regarding RAID, from what I have read. I would not use the nvidia raid
    >> included with the nforce4 boards, but use YAST to set up software raid.
    >> My plan is to use RAID 0 (I know that means no redundancy) and then
    >> use an additional hard drive for backing up the data files.
    >
    > RAID 0 is striping and will give you extra speed. But RAID 0 has the huge
    > drawback if one drive fails, the whole thing comes crashing down, and
    > you'll
    > have to reinstall everything.

    I realize that. I guess my initial thought was tht it is very easy to
    reinstall SuSE 9.3 (less than an hour). Since Windows server will be a
    guest OS, it will only be 6 or 7 files, so I copy over the files in 10
    minutes and it is reinstalled. I figured that the time saved by using RAID
    0 over say three years, would more than offset the time it takes to
    reinstall. Maybe that is foolish.

    Maybe i should use a 3ware controller and do raid 5. this time I will
    know what the beeping is :) Or would you recommend RAID 10 instead.

    >
    >> i am not inclined to use raid 5. Our current server had raid 5 with a
    >> Perc controller and 3 Ultra 160 SCSI drives. When one of the drives
    >> failed the controller began beeping like crazy, but everything worked
    >> Too bad i didn't know what the beeping meant. By the time I figured out
    >> what the beeping meant, a second drive failed and I had to reinstall
    >> Windows Small Business Server on the remaining drive.
    >
    > The value of reading manuals. If you had known what the beeping meant, you
    > could have kept the machine running (bar perhaps for the time it takes to
    > throw in a new drive, if the hardware doesn't support hotplugging). This
    > is
    > why people have redundancy. Their time costs more than the hardware

    My excuse is that someone else bought and installed the server, and since
    it was a Windows machine I tried not to get involved too muh. My mistake,

    If SuSE 9.3 supports raid10 or raid 0+1 in software, then i suppose i
    could just get 4 drives. I ahve heard that raid1 is fairly slow.

    Mike

    Michael A. Coan
    Woodlawn Foundation
    524 North Avenue, Suite 203
    New Rochelle, NY 10801-3410
    Tel: 914-632-3778
    Fax: 914-632-5502 

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