Mark, Thank you for the response. I ran a test backing up 5 volumes using FDR and DFDSS. The DFDSS ran longer. I then realized I had forgotten the OPT parameter. Re-ran the test and DFDSS out-performed FDR by a negligible amount, 30 secs over 5 volumes.
And yes, the RTC parameter was specified for FDR. Unfortunately switching tape hardware is not an option. We seem to be stuck with STK. Thank You, Dave O'Brien NIH Contractor ________________________________________ From: Mark Jacobs [mark.jac...@custserv.com] Sent: Monday, August 30, 2010 3:12 PM To: IBM-MAIN@bama.ua.edu Subject: Re: H/w vs S/W Encryption? On 08/30/10 15:04, O'Brien, David W. (NIH/CIT) [C] wrote: > Management has asked for feedback from the this group. > > We are considering hardware encryption using STK 9840D drives vs Software > encryption using most probably IBM Encryption Facility or CA Tape Encrypt. > > Can anyone with experience using any of the above products comment on that > experience? > > There has been a bit of discussion concerning the CPU overhead of using S/W > based encryption. Can anyone comment whether or not it is truly a concern? > > Please only those folks with actual experience should respond. > > Thank You, > Dave O'Brien > NIH Contractor > > > Several years ago we tried IBM's Encryption facility to encrypt full volume DFDSS volumes and we had problems with both CPU and elapsed times during our tests. We wound up using IBM's 3592 encrypting tape drives and have been very happy with them. -- Mark Jacobs Time Customer Service Tampa, FL ---- "If you board the wrong train, it's no use running along the corridor in the other direction," Dietrich Bonhoeffer. World War II German resistance fighter ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
