Mark, I agree with your statement. My concern is that some want to set up the ACS code to be generic,
IF (&DSN=PROD.**) Then DATACLAS=ENCRYPT. I want to update the JCL on just the first file to include the DATACLAS=ENCRYPT. So I am trying to figure it out the price of doing all the files individually on a stacked tape. Would iit slow down the process, and if it does, how can I calculate it? I know there is a some XX seconds it takes to do the encryption. If I have 35 files being encrypted on the tape, then I expect the answer should be 35 times XX seconds in delay of the job finishing. I am also told that if I use OPENTECH or COPYCAT to copy these stacked volumes to an offsite tape, then I do not need to encrypt the offsite tape as the files being copied are encrypted to start with. So the offsite tape becomes encrypted by default. Or did I get that wrong? Lizette > >Lizette Koehler wrote: >> When you run tape Encryption on a stacked tape do you encrypt all files that >> are stacked on a tape or just one file on the stacked tape? >> >> For example, I have a batch backup job that places 35 dumped volumes on one >> tape. I have looked at the doc and it seems I could place the encryption on >> the first file only and the whole tape will be encrypted. >> >> Or does it not take any more time or resources to have encryption happen for >> each volume on the stacked tape? >> >> I have been asked to place encrption on each file via Dataclas/ACS routines >> on a stacked tape. I am just trying to get a handle of what the performance >> trade offs are. >> >> >AFAIK, once a tape has been written in EEFMT2 format the entire tape is >encrypted, In other words it isn't on a file by file basis. > >-- > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
