Tape drive opinions - SUN

This is a discussion on Tape drive opinions - SUN ; Short story: I'm looking for opinions on the current tape drive options for backups in the 400Gb -> 2Tb range. The new LTO-3 and SDLTII cartridges hold 800Gb and 600Gb compressed, respectively. A single drive of either would probably satisfy ...

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Thread: Tape drive opinions

  1. Tape drive opinions

    Short story: I'm looking for opinions on the current tape drive
    options for backups in the 400Gb -> 2Tb range. The new LTO-3 and
    SDLTII cartridges hold 800Gb and 600Gb compressed, respectively.
    A single drive of either would probably satisfy our backup needs for
    another 2, maybe 3 years. By that time the tape capacity would likely
    have doubled again and we would buy another drive. Or there are
    tape libraries available for both formats and those would satisfy
    the capacity needs longer, albeit at the cost of multivolume
    backups. What do you folks suggest? Please comment upon reliability,
    cost, and/or performance. Any other tape format we should consider?

    Long story:
    We've just outgrown the single SDLT320 drive that has been used to
    backup a Solaris system I manage. This format/drive, and another
    we have on a different machine, have been ultra-reliable, with no
    drive failures and only one bad (from day 1) cartridge. No cartridge
    that worked the first time has failed subsequently. This Solaris
    machine is used primarily to run an Oracle database but we
    don't have very stringent uptime requirements. We also want to
    be really sure that we can get back on line again following a
    restore. So backups have consisted of shutting down the
    database, ufsdump of the various partitions and volumes, and
    then start everything up again. We rotate the tapes through
    an offsite storage location. The last adjustment of the
    Oracle storage put that data alone over 380Gb. It took 3 years for
    the database to grow to that size, and us to outgrow the SDLT320
    drive. I'd rather not do manual multi-cartridge backups on this
    system, mostly because I don't want to have to come in at 4:00AM
    to feed cartridges into the drive, or to shut down during a
    workday to do backups.

    Thanks,

    David Mathog
    readme backwards sortof: ude DOT hcetlac AT gohtam

  2. Re: Tape drive opinions

    In article , David Mathog writes:
    >Short story: I'm looking for opinions on the current tape drive
    >options for backups in the 400Gb -> 2Tb range. The new LTO-3 and
    >SDLTII cartridges hold 800Gb and 600Gb compressed, respectively.
    >A single drive of either would probably satisfy our backup needs for
    >another 2, maybe 3 years. By that time the tape capacity would likely
    >have doubled again and we would buy another drive. Or there are
    >tape libraries available for both formats and those would satisfy
    >the capacity needs longer, albeit at the cost of multivolume
    >backups. What do you folks suggest? Please comment upon reliability,
    >cost, and/or performance. Any other tape format we should consider?


    We decided for LTO3 (MSL6000 Series) with MRU and VMS (previously SLS too)

    Have you already seen
    http://www.openvms.digital.com/openv...pe_matrix.html

    --
    Peter "EPLAN" LANGSTOEGER
    Network and OpenVMS system specialist
    E-mail peter@langstoeger.at
    A-1030 VIENNA AUSTRIA I'm not a pessimist, I'm a realist

  3. Re: Tape drive opinions

    We just shipped 4 x Quantum LTO3 400/800GB rackmounted to a customer. (VMS
    Customer too!)
    They are very very quick and were no problem installation and backup-wise

    DT

    --

    David B Turner
    Island Computers US Corp
    2700 Gregory St, Suite 180
    Savannah GA 31404
    Tel: 912 447 6622 X201
    Cell: 912 447 6622 X251
    Fax: 912 201 0402
    Email: dbturner@icusc.com
    Web: http://www.islandco.com
    =====================================
    All orders are subject to the following terms and conditions
    of sale. These should be read before ordering.
    http://www.islandco.com/warranty.html

    "David Mathog" wrote in message
    news:e6pe1p$5br$1@naig.caltech.edu...
    > Short story: I'm looking for opinions on the current tape drive
    > options for backups in the 400Gb -> 2Tb range. The new LTO-3 and
    > SDLTII cartridges hold 800Gb and 600Gb compressed, respectively.
    > A single drive of either would probably satisfy our backup needs for
    > another 2, maybe 3 years. By that time the tape capacity would likely
    > have doubled again and we would buy another drive. Or there are
    > tape libraries available for both formats and those would satisfy
    > the capacity needs longer, albeit at the cost of multivolume
    > backups. What do you folks suggest? Please comment upon reliability,
    > cost, and/or performance. Any other tape format we should consider?
    >
    > Long story:
    > We've just outgrown the single SDLT320 drive that has been used to
    > backup a Solaris system I manage. This format/drive, and another
    > we have on a different machine, have been ultra-reliable, with no
    > drive failures and only one bad (from day 1) cartridge. No cartridge
    > that worked the first time has failed subsequently. This Solaris
    > machine is used primarily to run an Oracle database but we
    > don't have very stringent uptime requirements. We also want to
    > be really sure that we can get back on line again following a
    > restore. So backups have consisted of shutting down the
    > database, ufsdump of the various partitions and volumes, and
    > then start everything up again. We rotate the tapes through
    > an offsite storage location. The last adjustment of the
    > Oracle storage put that data alone over 380Gb. It took 3 years for
    > the database to grow to that size, and us to outgrow the SDLT320
    > drive. I'd rather not do manual multi-cartridge backups on this
    > system, mostly because I don't want to have to come in at 4:00AM
    > to feed cartridges into the drive, or to shut down during a
    > workday to do backups.
    >
    > Thanks,
    >
    > David Mathog
    > readme backwards sortof: ude DOT hcetlac AT gohtam




  4. Re: Tape drive opinions

    David Mathog wrote:
    > Short story: I'm looking for opinions on the current tape drive
    > options for backups in the 400Gb -> 2Tb range. The new LTO-3 and
    > SDLTII cartridges hold 800Gb and 600Gb compressed, respectively.


    [big snippage]
    I'd rather not do manual multi-cartridge backups on this
    > system, mostly because I don't want to have to come in at 4:00AM
    > to feed cartridges into the drive, or to shut down during a
    > workday to do backups.


    If you can afford it the best way to do backups is to have a backup
    server with adequate disk storage. The Production servers back up
    overnight to the backup server. Gigabit ether and fsnap are good hints
    here. You now have a fast restore method without fiddling with tapes if
    something breaks. The backup server can now be backed up to tape during
    working hours.

    A neat trick is to also set up the backup server as an install server
    with some extra post-install scripts to restore the entire system from
    scratch in the event of serious failure. This is VERY usefull in a data
    centre situation with many servers and a small number of spare machines
    reserved for failure recovery.


  5. Re: Tape drive opinions

    "David Mathog" wrote in message
    news:e6pe1p$5br$1@naig.caltech.edu...
    > Short story: I'm looking for opinions on the current tape drive
    > options for backups in the 400Gb -> 2Tb range. The new LTO-3 and
    > SDLTII cartridges hold 800Gb and 600Gb compressed, respectively.
    > A single drive of either would probably satisfy our backup needs for
    > another 2, maybe 3 years. By that time the tape capacity would likely
    > have doubled again and we would buy another drive. Or there are
    > tape libraries available for both formats and those would satisfy
    > the capacity needs longer, albeit at the cost of multivolume
    > backups. What do you folks suggest? Please comment upon reliability,
    > cost, and/or performance. Any other tape format we should consider?


    Hello David,

    We have been using a pair of SDLT600 tape drives for nearly 2 years
    without any problems except for 2 cartridges that were initially
    defective (we have not had any cartridges go bad over time).
    You may want to go to the next generation and get a DLT-S4 tape
    drive (800 GB native, 1.6 GB compressed) for $4000:

    http://www.pcnation.com/web/details.asp?item=J40768

    Daniel Lang



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