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Conference decwet::networker

Title:NetWorker
Notice:kits - 12-14, problem reporting - 41.*, basics 1-100
Moderator:DECWET::RANDALL.com::lenox
Created:Thu Oct 10 1996
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:750
Total number of notes:3361

573.0. "How to interrupt a large save group" by KAHLUA::LEMONS (And we thank you for your support.) Fri Apr 11 1997 10:48

    Hi
    
    The manager of the group that performs backups and restores asked a
    question that I don't have a good answer to.  Thoughts?
    
    "Now that we have a gazillion clients on ROBOT1 and we use the 3 tape
    drives between 9PM and 3 AM, the question comes up as to what should
    our process be when we have to
    do a RUSH restore OR a complete rebuild of a disk during this period?
    IF its just a restore it might sneak in there between backups, but an
    extensive disk rebuild might not happen in a timely fashion...so Rich
    said we could STOP backups, do the rebuild and restart the backups.
    Cant we some how keep the backups running on 2 drives and use the 3rd
    tape drive for the rebuild? then give the drive back to backups when
    where done? just a question I know we need to cover."
    
    Thanks!
    tl
T.RTitleUserPersonal
Name		DateLines
573.1DECWET::RWALKERRoger Walker - Media ChangersFri Apr 11 1997 11:025
	Legato has been requested to enhance the product to allow excluding
	a drive from saves but to still allow it to be used for recovers.
	
	I don't know if they are going to add it the their next major
	release yet.
573.2SANITY::LEMONSAnd we thank you for your support.Fri Apr 11 1997 14:1618
    Thanks, Roger.  I have a somewhat different problem.  Our TL822 has
    three drives.  During the heat of nightly backups, I want all three
    tape drives to saving data at their rated maximum speed.  For 99 nights
    out of 100, this works well.
    
    But once in a while, we'll need to begin a restore request while
    all three tape drives are saving data.  Currently, our nightly saves of
    our ~130 clients takes ~3 hours.  Making an urgent restore wait for 3
    hours isn't an option.
    
    Is there a way to submit a restore request that would run at a higher
    priority than the save request, such that NetWorker's server processes
    would notice it and handle it even while a large savegroup is in
    process?
    
    Thanks!
    tl
573.3DECWET::RWALKERRoger Walker - Media ChangersFri Apr 11 1997 14:504
	When it comes to tape drive access I don't think there is any
	priority field or setting.  If you can think though the implications
	of such an option and how well it would work with your large
	saves it would be good enhancement request to Legato.
573.4SANITY::LEMONSAnd we thank you for your support.Fri Apr 11 1997 15:018
    Hi Roger
    
    I'll cogitate on this, and put that here.  'Till then, how can I
    interrupt a savegroup operation that last several hours in order to use
    one drive?  Any ideas?
    
    Thanks!
    tl
573.5DECWET::RANDALLFri Apr 11 1997 17:306
Currently I believe that your only option is to shutdown the running saves
until you can finish the recover and then restart them.  If you do this with
a savegroup you can always use the restart command and Networker will only 
resave filesystems that hadn't already finished.

-- Rich Randall