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Simple, Safe, Reliable Disk Cloning? - Sun Solaris

Greetings, Can anyone point me to a safe, reliable and simple method for cloning hard drives under solaris, in particular, boot drives (under SPARC solaric 6 and 8)? This would be in relation to already installed and live servers. Googling seems to generate old and often conflicting info. TIA, --Duncan...

  1. #1

    Default Simple, Safe, Reliable Disk Cloning?

    Greetings,

    Can anyone point me to a safe, reliable and simple method for
    cloning hard drives under solaris, in particular, boot
    drives (under SPARC solaric 6 and 8)?

    This would be in relation to already installed and live servers.

    Googling seems to generate old and often conflicting info.

    TIA,

    --Duncan
    Duncan Guest

  2. #2

    Default Re: Simple, Safe, Reliable Disk Cloning?

    In article <bks9op$prl$radix.net>,
    "Duncan D. Sterling" <net> wrote:
     

    If it's already live and can't be shut down, a ufsbackup/ufsrestore to
    the disk for each slice. If you want an exact copy with all files
    closed, shutdown to single-user mode and ufsbackup/ufsrestore.

    If you want to mirror the systems will running, install ODS (aka
    Solstice Disk Suite) which came with the Server media kit. If you don't
    have the media, try eBay. Sun doesn't sell Solaris 6 any longer. Don't
    know about Solaris 8.

    --
    DeeDee, don't press that button! DeeDee! NO! Dee...



    Michael Guest

  3. #3

    Default Re: Simple, Safe, Reliable Disk Cloning?

    "Duncan D. Sterling" <net> wrote in message news:<bks9op$prl$radix.net>... 

    I distinctly remember answering this question on groups before...
    My favourite (not necessarily ideal) method to copy Sun SCSI disks
    is to "dd" the slice 2 (provided it covers the whole disk, which is
    sort of default)

    So, assuming the disks are geometrically identical,

    dd if=/dev/rdsk/c0t0d0s2 of=/dev/rdsk/c1t0d0s2 bs=4096k

    buffer size (bs=) is important, since with smaller buffer (like
    default 512 BYTES) it will take several hours to complete. With 1024k
    to 4096k buffers,
    copying the 18GB SCSI disk takes 10 to 30 minutes, depending on
    machine
    resources.

    If you need to make multiple copies of one disk in parallel,
    mail me to with the same username as here - I've got some C
    code
    to share.

    Keep in mind that the source disk must be as quiet as possible
    (ideally,
    not booted from at all, or at least booted in single-user mode), and
    doing
    fsck on target filesystems is always a good idea.

    Regards,
    Andrei
    aryzhov Guest

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