Re: Using RSTSTG with larger disks -- MIDRANGE-L

Evan,

I like the SAVSTG/RSTSTG option.  A couple of things
to note.  You mentioned that you are at V5R3.  Ensure
that PTF MF34142 is applied to your system prior to
performing the SAVSTG.  Clean the tape drive before
you perform the SAVSTG, and use new, (or relatively
new) tapes to try and help minimize the chance of
having a media error.  Also each tape that you use
MSUT have a Volume ID os SAVEDS.  (If you use more
than one tape, ensure that they ALL have a volume ID
of SAVEDS).

Otherwise, it works fine at V5R3, (and other
releases).  I like it because you do not have to worry
about any of the other save/restore gotchas, such aas
cross-library logical dependancies, journaling issues,
spool files.

One thing to note, while you can perform a RSTSTG onto
larger capacity drives, (e.g., 35GB to 70GB in your
case), it will only restore onto the same number of
drives.  If you have more drives in your new system
than old, any additional drives will remain
unconfigured.  

Regards

Pat
 
--- Evan Harris <spanner@xxxxxxxxxx> wrote:

Hi Everybody

We have a customer who is wanting to replace 8 X
35gb drives in a 520 
running V5R3 with 8 X 70gb drives.

There seem to be at least a couple of options:

1. Move storage around to free one or two
drives/replace that drive 
with a 70/repeat until all replaced
2. Simple unload reload using option 21
3. Use SAVSTG/RSTSTG

Option 1 is just too much messing around and
involves running 
unprotected and powering up and down several times.
Option 2 is 
absolutely do-able but involves losing spool files
in the process, 
and is a little time consuming and fiddly (we've
done this many times 
for all sorts of customers).

My reading of the Backup and Recovery Guide says
that we can use 
SAVSTG/RSTSTG to do the rebuild so long as the new
box will have at 
least the same number of drives of at least the same
capacity, which 
in this case is true, so Option 3 might be a viable
choice,

We've done a test of the procedure on an old 170 we
had hanging round 
- although only back to the exact same hardware - 
and it certainly 
seems pretty straight forward, so my question is, is
this a 
reasonable way to go about the job ? Are there any
hidden gotchas 
with using this procedure ? Any other comments ? Is
there any time 
advantage to using SAVSTG/RSTSTG ? For the curious,
we are planning 
on doing at least one 21 save before the SAVSTG if
we go this route.

All replies/comments welcome - thanks in advance.

Regards
Evan Harris
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Patricia Garrity
Garrity Systems, Inc

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