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Using NODECOMPRESS

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Normally, when VSTORE verifies a compressed store media, it reads in each record and decompresses it. This results in a thorough verification of the media by checking both the integrity of the data on the media as well as the correctness of the compression algorithm. If the NODECOMPRESS option is specified, VSTORE will only read the records from the media. It will not decompress them. This verifies only that there are no media errors on the media. on the media. It also speeds up the VSTORE process, since it does not have to perform the decompression.

This option should be used when the time to verify compressed store media is a prime concern. In most cases, full verification should be done to ensure that the data was compressed and written without error.

The NODECOMPRESS option can only be used with VSTORE, for example:

   :FILE T;DEV=TAPE
   :VSTORE *T;@.@.@;SHOW;NODECOMPRESS




Verifying That STORE Files Are Error Free Using VSTORE


Retaining the STORE Tapes