Is it possible to change from Client Encrypt to Tape Device Encrypt? (i.e. LTO4 / 3592 etc) The you're encrypting your offsite but your onsite is now getting better "Factoring" compression ratios.
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of lamont Sent: Wednesday, January 23, 2008 11:18 PM To: [email protected] Subject: [ADSM-L] Data Deduplication Hi Curtis, Unfortunately, this was already the case when I came, client encryption is the only option and the tapes are needed to be sent to offsite. I think we need to consider this - enabling/disabling client encryption and see how - in the test case on the upcoming POC with a de-dupe vendor. Thanks. cpreston wrote: > The other posters are correct. You will get 1:1. Dedupe works by > finding patterns. There are no patterns in encrypted data. > > One question would be why would you do that? Most people are > encrypting data as it leaves their site. The best way to do that is > hardware encryption (tape drive or SAN-based). Do that on the other > side of your dedupe box and before it goes to tape -- not at the > client -- and you'll have no issues with dedupe. > > --- > W. Curtis Preston > Backup Blog @ www.backupcentral.com > VP Data Protection, GlassHouse Technologies > > -----Original Message----- > From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf > Of lamont > Sent: Wednesday, January 23, 2008 12:29 AM > To: [email protected] > Subject: [ADSM-L] Data Deduplication > > Hi, > What would likely be the de-dupe ratio if tsm clients do archive > processing daily (file level, no tdps) with encryption enabled? > > Thanks. > > +--------------------------------------------------------------------- > +- > |This was sent by [EMAIL PROTECTED] via Backup Central. > |Forward SPAM to [EMAIL PROTECTED] > +--------------------------------------------------------------------- > +- +---------------------------------------------------------------------- |This was sent by [EMAIL PROTECTED] via Backup Central. |Forward SPAM to [EMAIL PROTECTED] +---------------------------------------------------------------------- This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately.
