Disaster Recovery, SDS, Volume Manager

From: joe macdonald (joe_macdonald25_at_yahoo.com)
Date: 10/29/03

  • Next message: Praveen P Nair: "Non-root Vs Root Process & Security" 
    Date: Wed, 29 Oct 2003 06:32:37 -0800 (PST)
To: sunmanagers@sunmanagers.org

    Hi all,

    We're planning on purchasing on a V880 and Volume
    Manager. As a test box, we might use a 480 or a 250
    or something similiar. From what I've read, it seems
    easier to use SDS to mirror my root disk, and put the
    other disks (6 in all in the 880) under control of
    Volume Manager.

    I have a few questions with this setup:

    1) what's everyone's opinion on using SDS for the boot
    disk? Is it REALLY easier to use SDS to recover than
    using Volume Manager?

    2) How much added complexity is there in using two
    volume managers?

    3) Since the 880's disks are 73GB, would I really have
    to dedicate 2x73GB to the OS/paging
    space/applications? My thinking is that I'd have to
    use (1) 73GB disk to install my OS/paging on and then
    use another 73GB as the mirror? This seems like huge
    overkill.

    4) Assuming I'd have to use (2) 73GB for the root
    mirror, I'd have 4 disks left over for data under
    control of Volume Manager. What would be the best
    process of restoring this data in a worst case
    scenario? Our data would be backed up nightly via
    TSM, but the volume groups, etc. would be lost.
    What's the best practise in recreating that?

    5) How would I restore disks under control of SDS?
    Simply using ufsdump/ufsrestore?

    6) If I wanted to test the DR plan on a smaller box,
    what do I need to keep in mind? I'd obviously have to
    buy another license for volume manager?

    7) Is there a whole other approach I should be looking
    at?

    I've no experience with either SDS or Volume Manager.
    Any pointers, books, web sites, etc. you can point me
    to would be appreciated. Any information you can
    share about your DR plan would also be appreciated.

    Thanks for your time,

    Will summarize, I assume others would be interested in
    the above.

    Joe

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  • Next message: Praveen P Nair: "Non-root Vs Root Process & Security"

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