Re: tape volume ID

["Neil Palmer" <neilp@xxxxxxxxxxx>]

Of course, if you wanted to reuse a tape and it's expiry date hadn't been 
reached, you could always specify SEQNBR(1) CLEAR(*ALL)

...Neil





Chuck Lewis <clewis@iquest.net>
Sent by: owner-midrange-l@midrange.com
2001/02/12 12:47
Please respond to MIDRANGE-L

 
        To:     MIDRANGE-L@midrange.com, D.BALE@handleman.com
        cc: 
        Subject:        Re: tape volume ID


Dan

What I do is initialize a tape with a unique volume ONCE. Start with 
000000 (or
000001 if you aren't into IBM numbering <BG>)...

I have a file that keeps track of all of this (you can buy packages to do 
this
too). My backups save with an expiration date calculated 21 days from the 
day they
are running (via a program) so they do not need to be reinitialized when 
they are
due to be used again (the expiration date has passed).

You can go into System Service Tools (STRSST) and take 1. Start a service 
tool and
then take 1. Product activity log and then take either 4. Work with 
removable media
lifetime statistics or 5. Display or print removable media session 
statistics.
Either way you will see WHY you want to keep Volume ID's unique - this 
will show
you the statistics of among other things, errors for each tape used.

HTH !

Chuck

D.BALE@handleman.com wrote:

> I've seen a "standard operating procedure" over the years of 
initializing
> tapes for backup using a new/different volume ID every time a tape is 
used
> (usually the current date value).  Does doing this defeat the ability of 
the
> AS/400 to detect bad tapes over a period of time?  "Problem Analysis" is 
a
> term that pops into my head for some reason.  It seems to me that the 
Volume
> ID should be set once per tape, and never used again on another tape. 
Yes? No?
>
> As I'm just getting involved in this again for the first time in five 
years,
> my memory's still a little shaky on the subject, but I seem to remember
> thinking that if INZTAP didn't require a NEWVOL entry everytime you 
needed to
> initialize a tape, it would be easier to keep the *SAME volume ID.  Is 
there a
> good reason why *SAME is not a valid value for the NEWVOL parameter?
>
> Dan Bale
> IT - AS/400
> Handleman Company
> 248-362-4400  Ext. 4952




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