Re: is TSM Client-encrypted data still compressable on the 3592 Drives ?

2009-03-19 Thread Wanda Prather
Compression algorithms work by removing repeating patterns in the data. Encryption also works by removing repeating patterns in the data. So you are correct that no matter what type of drives you are using, the drives are unlikely to be able to do any significant amount of compression on

Re: is TSM Client-encrypted data still compressable on the 3592 Drives ?

2009-03-19 Thread Rainer Wolf
Hi Wanda , thanks a lot for this detailed clarification and your additional idea ! - it makes all sense and is quite comprehensible now Rainer Wanda Prather schrieb: Compression algorithms work by removing repeating patterns in the data. Encryption also works by removing repeating patterns in

Re: is TSM Client-encrypted data still compressable on the 3592 Drives ?

2009-03-19 Thread Wanda Prather
You are very welcome! On Thu, Mar 19, 2009 at 11:20 AM, Rainer Wolf rainer.w...@uni-ulm.dewrote: Hi Wanda , thanks a lot for this detailed clarification and your additional idea ! - it makes all sense and is quite comprehensible now Rainer Wanda Prather schrieb: Compression algorithms

is TSM Client-encrypted data still compressable on the 3592 Drives ?

2009-03-18 Thread Rainer Wolf
Hi All, we normally recommend 'not using TSM Compression' becaus the fantastic 3592-drives are doing the compression very well and fast. If users want to encrypt their data with the tsm-client I tend to recommend also using compression because data would be first get compressed and then get

Re: is TSM Client-encrypted data still compressable on the 3592 Drives ?

2009-03-18 Thread Clark, Robert A
Client-encrypted data still compressable on the 3592 Drives ? Hi All, we normally recommend 'not using TSM Compression' becaus the fantastic 3592-drives are doing the compression very well and fast. If users want to encrypt their data with the tsm-client I tend to recommend also using compression