Veritas-bu

[Veritas-bu] Addendum to Calendar Based Scheduling Question Posted Earlier

2003-02-21 13:58:21
Subject: [Veritas-bu] Addendum to Calendar Based Scheduling Question Posted Earlier
From: markjessup AT northwesternmutual DOT com (markjessup AT northwesternmutual DOT com)
Date: Fri, 21 Feb 2003 12:58:21 -0600
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>From what I have heard, it is not fixed yet.  There is just work arounds=

which I think the Tech Note is suggesting.  We have MP2 on and still
have the problem.  Our Regional Support person still says it is a known
issue ans is being worked on by Engineering. =20



Mark Jessup=20
IS Manager, Enterprise Storage and Output Management
Northwestern Mutual
(414) 665-3968
markjessup AT northwesternmutual DOT com



=2D----Original Message-----
From:       blacksmith [SMTP:blacksmith AT rogers DOT com]
Sent:       Friday, February 21, 2003 12:37 PM
To:         dfdwyer; veritas-bu
Cc:         blacksmith
Subject:    Re: [Veritas-bu] Addendum to Calendar Based Scheduling
            Question Posted Earlier


The problem under technote 248400 was fixed in NBU=5FMP=5F2=20


dB=20


   ----- Original Message ----- From: Dennis Dwyer
   <mailto:dfdwyer AT tecoenergy DOT com> To:
   veritas-bu AT mailman.eng.auburn DOT edu
   <mailto:veritas-bu AT mailman.eng.auburn DOT edu> Sent: Wednesday,
   February 05, 2003 11:10 AM Subject: [Veritas-bu] Addendum to
   Calendar Based Scheduling Question Posted Earlier=20
  =20
  =20
   OK ... At the risk of beating this beyond recognition, I went out
   to the Veritas support web site and found several hits on this
   issue. I found a Newsgroup article from Steve Staves titled
   "Another NBU 4.5 Calendar versus Frequency Question" from last
   August that, although short, was very to the point. There were
   other hits as well to support this but the bottom line is (my
   interpretation):=20
  =20
  =20
   #1: If a backup window for a given policy is large (like 5 or 12
   hours) and the calendar based schedule crosses the midnight hour,
   you will probably get at least two backup schedules submitted for
   the same policy (that appears to be what's happening to us)
   because of the way NBU tracks the days and judges the frequency of
   the last backup.=20
  =20
  =20
   #2: According to multiple folks who have raised this question with
   Veritas ... Veritas doesn't recognize this as a major problem.
   Their solution (per Tech Note 248400) is to make the calendar
   based schedule window a short period of time rather than a long
   period of time. Preferably, just enough to start the policy. I
   have no idea how this will affect failures and restarts or
   policies that have the entire weekend as a window.=20
  =20
  =20
   #3: I find it difficult to believe that ArcServeIT (what I
   consider a lesser product to NBU DataCenter and the product I
   threw out to convert to NBU) does calendar based schedule the way
   I would expect it to be done and Veritas thinks their
   implementation is not a problem.=20
  =20
  =20
   I guess we'll still tinker with it off and on but until Veritas
   decides to address this (or at least publish in great detail how
   to implement it so it works every time) we are probably going back
   to Frequency Based Scheduling for the majority of our policies.=20
  =20
  =20
   I hope the Veritas folks that review this group will take this
   item back with you and realize the common perception of how
   Calendar Based Scheduling should work (and does work in other
   products) is not even close to what you've implemented in NBU 4.5.
   You either need to modify NBU Calendar Based Scheduling so it
   works like the users think it will work or ... dare I say it ...
   document how it does work so we will know what to expect.=20
  =20
  =20
   My thanks to Hampus Lind for his response that pretty much
   supports what I've been able to find in the research.=20
  =20
  =20
   Regards,=20
  =20
  =20
   Dennis=20
  =20
  =20
   Dennis F. Dwyer
   Manager, Systems Software
   Tampa Electric Company=20
  =20
  =20
   (813) 225-5181 - Voice
   (813) 275-3599 - FAX=20
  =20
  =20
   Visit our corporate website at www.tecoenergy.com
   <http://www.tecoenergy.com>=20
  =20
  =20
   The Colonel Says: "Time is not a test of the truth"
   Translation: Just because you've always done it that way, doesn't
   make it rig
  =20
  =20


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