n> 
> Good Day.
> 
> We know the filename need to restore and have old tapes with recycled 
> backups.

What do you mean by 'recycled backups'?  Have the tapes only been marked
'recyclable', or have they already been relabeled?  If they've been
relabled, then you can't read the old data any longer.  If you *really*
have to get the data back from such a volume, call a recovery house.
They have special equipment that can read it.

> Is it possible to recover this file from old tapes without recovering 
> client index (it very slow...)?

If the tape is only marked 'recyclable' and hasn't yet been relabeled,
then you can use the following.

The client file index is required to recover one file quickly.  It knows
exactly where on the saveset the file that you want is located.  Without
it, you'll have to look through the whole saveset for the file.

If you don't have the client index for that saveset already (it would
have been deleted before the volume was made recyclable), you have
several options:

#1 nsrck -L7 with a date that would cover that time period.  You could
   recover an older client index and merge them together.  That can be
   fast if you have the index on tape.

#2 scan the savset with 'scanner -i -S <ssid> -f <file> <drive>'.
   Scanning the indexes aren't necessarily fast, but you only have to
   scan one saveset if you narrow it down that far.  The time it would
   take would depend on the media, the size of the saveset, and the
   amount of multiplexing.  After scanning, you'll have a file index to
   do a normal recover.

#3 Recover the entire saveset.  In some cases, that could take about as
   much time as scanning, but the recover is done.  Then you just need
   to put the one file where you want it.  It takes disk space though.

#4 (on UNIX) scanner | usasm.  This is more complex, but it pulls
   particular files from a full saveset recover.  It doesn't require the
   temporary disk space of #3, and you can use the file as soon as it is
   found in on the tape.  So you could abort the recover after it
   appears.

-- 
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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