Actually we have them in production and have sucessfully tested a
restore of an encrypted tape in our disaster recovery environment. We
use RACF to control the public piece of the key pair and ICSF holds the
private key. Our DR environment has a completely separate RACF and ICSF
databases from production.

The way that we have set it all up to work is to create keypairs in both
the production and DR environments, import the public keys from the DR
environment into the production environment and attach these keys to EKM
keyring.

When we encrypt tapes we use both the production and DR public keys to
wrap the data encrypting key on the tape. At DR the tape drives talk to
EKM which sends the DR private key to the tape drive which sucessfully
unwraps the data encrypting key protected by the DR public key.

Does that make sense?

Mark Jacobs
Time Customer Service 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Hal Merritt
Sent: Thursday, April 10, 2008 4:24 PM
To: [email protected]
Subject: Re: Encrypted Tapes and DR

I hear the name of the algorithm is WORN: Write once, read never :-)


Sorry. 

We are looking at the solution and have been through some presentations.


http://www-03.ibm.com/press/us/en/pressrelease/20254.wss

Key management comes with the solution and DR considerations are
allegedly built right in. I don't recall any of the details, but I do
recall thinking their scheme might actually work. After all, sales folks
always know their product perfectly and all software works exactly as
documented :-) 

Even so, my personal take is that there are lots of complex little
pieces that have to work perfectly or the data is irrevocably lost.
Since the data includes your backups, well, there you are. Somehow the
cost/benefit/risk equations don't quite add up in my poor, befuddled
brainbone.     

HTH     
 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Lizette Koehler
Sent: Thursday, April 10, 2008 2:37 PM
To: [email protected]
Subject: Encrypted Tapes and DR

Is anyone using the new Encryption Tape Drives (like TS3500) from IBM at
a DR site?  If so, how are the keys handled?


Lizette

 

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