Wilson,

I don't know what is going on with the first tape (have you cleaned the
drive completely?) but the second error message rings a bell. Are you doing
the restore on the exact same drive you made the tape on? HP documented a
similar issue recently:

Store tapes were created as follows:

 STORE  /BACKUP/@/@,/PROG/;;DIRECTORY;ONLINE=START;STORESET=(*DLT1),(*DLT2);
MAXTAPEBUF;SHOW;STATISTICS;PROGRESS;COMPRESS=LOW

Where dlt1 and dlt2 are ID: DLT7000 on PATH: 10/4/4.3.0 and 10/16/4.3.0.

When attempt to restore these tape on the same device type but the following
paths 10/16/12.4.0 and 10/16/12.5.0 the following occurs:

RESTORE ;/BACKUP/DEN/@; OLDDATE;CREATE=CREATOR;SHOW;
  RESTORESET=(*PARA),(*PARB)

/DEN602/PUB/T1.1.1  FAILED TO RECOVER PORTIONS OF COMPRESSED DATA

If the restore is done on the same store devices, the error message does not
occur.

RESOLUTION

The error is due to the dlt devices on the same device adapter.  DLT7000
must
be on different device adapter if tapes are to be used at the same time as
in
interleave option.  (This provides a higher disk data rate. Interleaving is
accomplished by reading from several disk drives (files) simultaneously.
The
file data is blocked together and then stored to the specified device(s).
The
effect is to accelerate the STORE process.)

The work arounds are to not use tapes on same device adapter for interleave
restore or put the dlt7000 devices on different device adapters.

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