Re: Unload/Reload

[Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>]

Rob,

How long it takes to recover is a big question.  I have customers were 
it fits the rule of thumb, about 1.5 times the save time to recover (not 
including creating RAID sets or drive initialization) but if I remember 
correctly, you have Domino and I suspect you use SAVDOMBRM.  In this 
case you will run into some intrigue restoring depending on your 
directory structure.  SAVDOMBRM does not save the parent directories, so 
ownerships and authorities might not get put down as you expect.

One customer I just did recovery testing for took about 8 hours total 
for a "21" save.  Over 70 hours to recover because there were a shade 
over 50 million IFS objects  DB/2 went down in a snap, but the rest of 
the system, not so much.  This customer is now installing a brand new 
CBU box with PowerHA to replicate his system since 3 - 4 days of 
downtime would not be acceptable to the business.  (remember disk init 
is not all that fast and in a real recovery you will have to do it)


Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 9/4/2012 7:41 AM, Jack Kingsley wrote:
> Load source drive as well
>
> On Tue, Sep 4, 2012 at 8:25 AM,<rob@xxxxxxxxx>  wrote:
>
> > >  We're planning on doing an unload/reload to replace several disk drives.
> > >  We are a BRMS shop, that also Mimix's that lpar.
> > >  Is the rule of thumb on a reload still time to do the save times 2?  We
> > >  save access paths.
> > >
> > >
> > >  Rob Berendt
> > >  --
> > >  IBM Certified System Administrator - IBM i 6.1
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