Thanks Len Did you see Justin's stats? They seem to show quite a difference between using encryption and not while using IBM LTO4
Regards, Tal IBM LTO-4 ENCRYPTED (RATIO = ~1.5:1) ABCD25 3 67 02/17/2010 20:00 02/23/2010 00:00 hcart 1188618163 0 MPX 03/26/2010 00:00 N/A FULL ENCRYPTION ABCD36 3 101 02/18/2010 00:12 03/02/2010 00:00 hcart 1239789810 0 MPX 04/02/2010 00:00 N/A FULL ENCRYPTION IBM LTO-4 NO ENCRYPTION (RATIO = ~3.1:1) ABCD49 2 1144 02/23/2010 02:43 02/26/2010 01:32 hcart 2451541654 0 MPX 03/19/2010 02:49 N/A FULL ABCD50 2 1350 02/26/2010 01:32 03/01/2010 01:05 hcart 2377975447 0 MPX 03/22/2010 02:05 N/A FULL ABCD51 2 1275 02/24/2010 20:01 02/27/2010 10:40 hcart 2575741349 0 MPX 03/20/2010 11:40 N/A FULL -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Len Boyle Sent: 02 March 2010 13:53 To: Shekel Tal; Justin Piszcz; Kevin C Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Sun/StorageTek based LTO4 encryption Tal, I can only speak of the IBM LTO4 tape drives, I assume the others are the same. IBM says that each block of data to be written to the tape is compressed or not then encrypted. They do not compress blocks that would grow if compressed. Regards len -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Shekel Tal Sent: Tuesday, March 02, 2010 8:39 AM To: Justin Piszcz; Kevin C Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Sun/StorageTek based LTO4 encryption I have also been looking at this as an option. One of the considerations is the effect encryption has on compression. I have heard you loose the ability to compress effectively when using compression. Have you noticed an effect on your tape drive compression when using tape drive based encryption? Regards, Tal -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Justin Piszcz Sent: 01 March 2010 21:26 To: Kevin C Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Sun/StorageTek based LTO4 encryption On Mon, 1 Mar 2010, Kevin C wrote: > Sorry if this topic is been discussed before. > > Looking for members who have implemented LTO4 based encryption on > Sun/StorageTek/Oracle platforms, any useful comments/journeys/guidance. We > are on HP LTO4 drives with SL500/SL3000 libraries. From what I understand, > this pretty much limits us to the StorageTek Crypto Key Management System w/ > KMA appliances at each library site. The other option, today, is NetBackup's > KMS software. > > Thank you. > I have using the IBM LTO-4 drives with STK libraries, works great, as long the firmware is version 7BG2, I have seen the drive reset itself if the firmware is any other version (more recent ones). Also using NBU & KMS. It works good, note you can only have 2 volume pools that use encryption. Justin. _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu